The complete index
Every tool, one page.
585 free browser-based utilities across 29 categories. Each tool has its own page with a working workspace, an explanation of how it works, inputs, and FAQs.
Every tool runs locally when the browser allows it. No account, no install, no file uploads.
Image
22 tools
- Image ResizerDrag handles or pick a scale preset to resize any image in the browser.
- Image CompressorpopularShrink JPEG, PNG and WebP images with a visual quality control.
- Image ConverterpopularConvert images between PNG, JPEG, WebP and AVIF without uploading.
- Image CropperDrag a freeform box or snap a preset aspect ratio, straight in your browser.
- Image RotatorRotate images by 90, 180 or 270 degrees losslessly in the browser.
- Flip ImageMirror an image horizontally or vertically in one click.
- Image to Base64Turn an image into a data URI for HTML, CSS or JSON.
- Base64 to ImageDecode a Base64 string or data URI back into a downloadable image.
- Image to PDFWrap one image, or many, into a clean multi-page PDF.
- Favicon GeneratorGenerate a complete favicon set from one square image as a ZIP.
- Image SplitterSlice an image into a grid of tiles and download them as a ZIP.
- Image to ASCIITurn a photo into monochrome text art with adjustable width.
- Image Color PickerClick any photo pixel to read its HEX, RGB and HSL values.
- Image MetadataInspect dimensions, aspect ratio, format and file size locally.
- Image UpscalerSmoothly enlarge an image 2x or 4x using high-quality canvas resampling.
- Image WatermarkStamp text watermarks with custom colour, size and position.
- Image BorderAdd a clean solid or padded border around any image.
- Circle CropCreate a transparent circular avatar or icon from any image.
- Rounded CornersRound image corners and export a transparent PNG.
- Social Image ResizerpopularResize one image to Instagram, X, LinkedIn and YouTube dimensions.
- Image to WebPConvert JPEG or PNG files to modern WebP with quality control.
- Compress Image to SizeHit a target file size using an automatic quality search.
Photo
16 tools
- Photo FilterApply cinematic, warm, cool and mono filter presets instantly.
- Vintage PhotoGive photos a faded film look with grain-free canvas filters.
- Black & White PhotoConvert a colour photo to a rich monochrome image.
- Sepia PhotoWarm, classic sepia toning for portraits and landscapes.
- Photo EnhancerLift contrast and colour with a gentle automatic enhancement.
- Photo SharpenerCrisp up soft images with a lightweight convolution sharpener.
- Photo BlurApply a tasteful Gaussian blur for backgrounds and privacy.
- Pixelate PhotoCreate a retro pixel look or obscure sensitive details.
- Photo VignetteAdd a soft dark vignette that draws the eye to the centre.
- Photo to SketchTurn a photo into a pencil-style edge sketch.
- Add Text to PhotoOverlay custom text on an image with size and position controls.
- Add Image WatermarkPlace a logo over a photo with opacity and corner controls.
- Passport Photo MakerCrop a photo to standard passport proportions at print resolution.
- Profile Picture MakerMake square, circular or bordered profile photos for any platform.
- Polaroid FrameDrop a photo into a classic instant-film frame with a caption.
- Photo CollageArrange 2–6 photos into a clean downloadable grid collage.
Video
19 tools
- Video TrimmerpopularDrag in and out points on the filmstrip and export a WebM clip in the browser.
- Video CroppernewCrop video freely or to a preset aspect ratio and export the result locally.
- Video CompressorRe-record video at a lower bitrate for a smaller file.
- Video to GIFSelect a range on the filmstrip and turn it into an optimised animated GIF.
- Video to FramesExtract evenly spaced frames from a video as a ZIP of PNGs.
- Video Frame ExtractorScrub the filmstrip and grab a full-resolution still at any moment.
- Video to AudioExtract the audio track from a video as a WAV file.
- Video ResizerPick a 1080p, 720p, 480p or 360p target while keeping the aspect ratio.
- Video RotatorRotate video 90, 180 or 270 degrees by re-recording.
- Mute VideoStrip the audio track and export a silent WebM video.
- Video Speed ChangerSpeed up or slow down video with a local re-record.
- Video Thumbnail MakerScrub to a great-looking frame and save it as a thumbnail.
- Video Contact SheetBuild a storyboard image of frames from across a video.
- Video RecorderRecord from your webcam and download the clip instantly.
- Screen RecorderCapture a screen, window or tab with optional microphone audio.
- Video WatermarkBurn text onto video with a browser-side re-record.
- Video MetadataInspect duration, resolution, aspect ratio and file details.
- Video to WebMConvert a playable video to WebM using MediaRecorder.
- Images to VideoTurn a handful of images into a slideshow video clip.
Audio
18 tools
- Audio TrimmerpopularCut a precise section from an audio file and download WAV.
- Audio ConverterDecode MP3, M4A, OGG or WAV and export a clean WAV file.
- Audio Speed ChangerSpeed up or slow down audio while changing pitch naturally.
- Reverse AudioPlay any sound backwards and export the reversed WAV.
- Audio NormalizerRaise quiet recordings to a consistent peak level.
- Audio Volume BoosterAmplify or attenuate audio with headroom protection.
- Audio FadeAdd a smooth fade-in and fade-out to any audio clip.
- Audio JoinerCombine multiple audio files end-to-end into one WAV.
- Ringtone MakerTrim a song to a 30-second ringtone and export it.
- Waveform GeneratorRender a transparent waveform PNG from any audio file.
- Audio MetadataRead duration, sample rate, channels and file details.
- Audio to Base64Encode a local audio file as a Base64 data URI.
- Base64 to AudioDecode a Base64 audio string into a playable file.
- Voice RecorderRecord from your microphone and download a WAV file.
- Audio Mono ConverterMix stereo audio down to a single mono channel.
- Trim SilenceAutomatically remove quiet lead-in and tail from audio.
- Audio Pitch ShifterShift pitch by semitones using playback-rate resampling.
- Audio EqualizerApply quick low, mid and high shelf adjustments.
Subtitles
14 tools
- SRT to VTTpopularConvert SubRip captions to WebVTT for the web player.
- VTT to SRTConvert WebVTT caption files back to standard SRT.
- SRT to Plain TextStrip timestamps and numbering from captions.
- Subtitle ShifterShift every caption cue forward or backward by milliseconds.
- Subtitle CleanerRemove duplicate cues, HTML tags and empty lines.
- Subtitle SplitterBreak long subtitle cues into shorter readable chunks.
- Subtitle MergerMerge two overlapping SRT tracks into one sorted file.
- Subtitle Search & ReplaceFind and replace text across every subtitle cue.
- Subtitle Case ConverterUppercase, lowercase or title-case an entire caption file.
- Subtitle StatisticsCount cues, words, duration and reading speed.
- SRT to JSONParse an SRT file into a clean JSON cue array.
- JSON to SRTTurn subtitle JSON cues back into a valid SRT file.
- Subtitle FPS ConverterRetime captions when changing video frame rates.
- Subtitle Line BreakerWrap caption lines to a comfortable character width.
22 tools
- Merge PDFpopularCombine several PDFs into one document, in your order.
- Split PDFSplit a PDF at page ranges and download a ZIP of results.
- Extract PDF PagesKeep only the pages you specify in a new PDF.
- Delete PDF PagesRemove unwanted pages without re-uploading anywhere.
- Rotate PDFRotate every page or selected pages by 90/180/270°.
- Reorder PDF PagesArrange pages in any order using a simple page list.
- Add Page NumbersStamp page numbers onto a PDF with position control.
- Watermark PDFAdd a diagonal text watermark to every PDF page.
- PDF Metadata EditorEdit title, author, subject and keywords in a PDF.
- Images to PDFCombine JPG, PNG or WebP images into a paginated PDF.
- PDF to ImagesRender PDF pages to PNG images and download a ZIP.
- PDF to TextExtract selectable text from every page of a PDF.
- PDF Page CounterCount pages and read basic PDF document information.
- Compress PDFRe-save and optimise PDF structure for a smaller file.
- Text to PDFTurn plain text into a clean, paginated PDF document.
- PDF to Base64Encode a PDF as Base64 for embedding or APIs.
- Base64 to PDFDecode a Base64 string into a downloadable PDF.
- Add Blank PageAppend one or more blank pages to an existing PDF.
- PDF Form InspectorList interactive form fields and their current values.
- Sign PDFPlace a drawn or typed signature image onto a PDF.
- Split PDF into PagesExplode every page into its own PDF, bundled as a ZIP.
- Resize PDF PagesScale every PDF page to A4, Letter or custom size.
Documents
22 tools
- Markdown to HTMLRender Markdown to clean HTML with a live preview.
- HTML to MarkdownConvert pasted HTML into tidy Markdown syntax.
- Markdown to PDFConvert a Markdown document into a printable PDF.
- Text to PDFCreate a simple, paginated PDF from plain text.
- Word CounterpopularCount words, characters, sentences and paragraphs as you type.
- Character CounterLive character count with and without spaces.
- Document Case ConverterSwitch an entire document between case styles.
- Remove Line BreaksTurn hard-wrapped text into clean flowing paragraphs.
- Find & ReplaceReplace words and phrases across a whole document.
- Text SummarizerBuild an extractive summary from the most important sentences.
- Readability CheckerScore text with Flesch reading ease and grade level.
- Document OutlinerTurn headings into a clean nested outline.
- Word FrequencyFind the most repeated words in a document.
- Text Diff CheckerCompare two texts and see additions and removals line by line.
- Merge Text FilesCombine multiple text files into one document.
- Text SplitterSplit long text into chunks by words or characters.
- Email Signature GeneratorCreate a clean HTML email signature you can copy.
- Invoice GeneratorGenerate a printable invoice with editable line items.
- Cover Letter GeneratorAssemble a tailored cover letter from a few details.
- Resume BuilderTurn your details into a simple, ATS-friendly resume.
- Meeting Notes FormatterTurn rough notes into a structured meeting summary.
- Remove Duplicate ParagraphsClean repeated paragraphs while preserving order.
Text
30 tools
- Uppercase ConverterConvert all letters to uppercase.
- Lowercase ConverterConvert all letters to lowercase.
- Title Case ConverterCapitalise every word for titles and headlines.
- Sentence Case ConverterCapitalise the first letter of each sentence.
- Camel Case ConverterTurn text into camelCase identifiers.
- Snake Case ConverterTurn text into snake_case identifiers.
- Kebab Case ConverterTurn text into kebab-case slugs and class names.
- Toggle Case ConverterSwap uppercase and lowercase characters.
- Reverse TextReverse the character order of any text.
- Reverse WordsReverse word order while keeping each word intact.
- Sort LinesSort lines alphabetically, numerically or by length.
- Sort WordsAlphabetise every word in a block of text.
- Remove Duplicate LinesDrop repeated lines while keeping the first occurrence.
- Remove Empty LinesDelete blank lines and tidy up spacing.
- Trim LinesRemove leading and trailing spaces from every line.
- Number LinesAdd sequential numbers to each line.
- Remove Line Breaks (Text)Join wrapped lines into continuous paragraphs.
- Add Line BreaksInsert line breaks after sentences or at a width.
- Find and ReplaceReplace any text pattern, optionally with regex.
- Remove PunctuationStrip punctuation while leaving words and numbers.
- Remove NumbersDelete all digits from a piece of text.
- Extract EmailsPull every email address out of a document.
- Extract URLsFind and list every URL in a block of text.
- Extract NumbersExtract all numeric values from mixed content.
- Word Counter (Text)Count words and characters in real time.
- Character Counter (Text)Count characters with and without spaces.
- Reading Time CalculatorEstimate reading and speaking time for any text.
- Slug GeneratorCreate clean URL slugs from titles and phrases.
- Wrap TextWrap long lines at a chosen character width.
- Remove Extra SpacesCollapse repeated spaces, tabs and blank lines.
Developer
25 tools
- JSON FormatterpopularPrettify JSON with configurable indentation.
- JSON MinifierStrip whitespace from JSON for production.
- JSON ValidatorCheck JSON syntax and locate the first error.
- JSON to TypeScriptGenerate TypeScript interfaces from sample JSON.
- JSON Key SorterRecursively sort object keys alphabetically.
- JavaScript MinifierLightweight whitespace and comment stripping for JS.
- CSS MinifierCompress CSS by removing whitespace and comments.
- HTML MinifierMinify HTML safely without touching content.
- SQL FormatterFormat SQL queries with consistent keywords and indentation.
- Regex TesterTest regular expressions, flags and capture groups live.
- Cron ParserExplain a cron expression in plain English.
- UUID GeneratorGenerate cryptographically random v4 UUIDs in bulk.
- JWT DecoderDecode JWT header and payload without verifying locally.
- URL ParserBreak a URL into protocol, host, path, query and hash.
- URL EncoderPercent-encode text for URLs and query strings.
- URL DecoderDecode percent-encoded URLs and form data.
- Hash GeneratorGenerate SHA-1, SHA-256 and SHA-512 digests.
- Diff CheckerCompare two texts side by side with line-level changes.
- HTML Entity EncoderEscape HTML-sensitive characters safely.
- HTML Entity DecoderDecode HTML entities back to plain characters.
- cURL to FetchConvert a cURL command into JavaScript fetch code.
- YAML to JSONParse YAML and output formatted JSON.
- JSON to YAMLConvert JSON into clean YAML.
- XML FormatterIndent and prettify XML markup.
- HTML BeautifierIndent HTML for readable source.
Data
22 tools
- CSV to JSONpopularConvert CSV rows into a JSON array of objects.
- JSON to CSVFlatten JSON objects into downloadable CSV.
- CSV FormatterNormalise CSV quoting, spacing and line endings.
- Change CSV DelimiterConvert commas to semicolons, tabs or pipes.
- CSV DeduplicatorRemove duplicate rows based on one column or the whole row.
- CSV SorterSort rows by any column, ascending or descending.
- CSV FilterKeep rows that match a column value or condition.
- CSV TransposeSwap rows and columns in a table.
- CSV Row CounterCount data rows and columns instantly.
- CSV Column StatsGet min, max, average and counts per numeric column.
- CSV to Markdown TableTurn CSV data into a clean Markdown table.
- CSV to SQLGenerate INSERT statements from CSV rows.
- CSV to TSVConvert comma-separated data to tab-separated data.
- TSV to CSVConvert tab-separated data to comma-separated CSV.
- CSV Column PickerKeep only chosen columns from a table.
- Add Column to CSVAppend a new column with a constant or sequential value.
- Remove Empty CSV RowsDelete rows where every cell is blank.
- CSV to HTML TableConvert CSV into a semantic HTML table.
- CSV to XMLTurn tabular data into structured XML.
- CSV to YAMLConvert CSV rows into a YAML sequence.
- JSON to Markdown TableTurn an array of JSON objects into a Markdown table.
- JSON to SQLGenerate SQL INSERT statements from JSON records.
JSON
18 tools
- JSON FormatterpopularFormat and beautify JSON with 2, 4 or 8-space indentation.
- JSON MinifierRemove all unnecessary whitespace from JSON.
- JSON ValidatorValidate JSON and pinpoint syntax errors.
- JSON SorterSort object keys recursively for stable output.
- JSON to TypeScriptCreate nested TypeScript interfaces from JSON.
- JSON to YAMLConvert JSON to human-friendly YAML.
- JSON to XMLConvert JSON structures into XML markup.
- JSON to CSVFlatten JSON records into CSV rows.
- JSON to JavaScriptConvert JSON to a JavaScript module or const.
- JSON EscapeEscape text for safe inclusion in JSON strings.
- JSON UnescapeUnescape JSON string escape sequences.
- JSON DiffCompare two JSON documents and highlight changes.
- JSON FlattenFlatten nested JSON keys into dot notation.
- JSON Key ExtractorList every unique key used in a JSON document.
- JSON Size AnalyzerMeasure JSON size and find the largest values.
- JSON to Query StringSerialize a JSON object into URL query parameters.
- Query String to JSONParse URL query parameters into JSON.
- Remove Nulls from JSONRecursively strip null and empty values.
Color & Design
20 tools
- HEX to RGBConvert a hex colour to RGB values.
- RGB to HEXConvert RGB channels into a hex colour code.
- HEX to HSLConvert hex colours to HSL for easier editing.
- HSL to HEXTurn HSL values into a hex colour.
- RGB to HSLConvert RGB channels to hue, saturation and lightness.
- HSL to RGBConvert HSL values to RGB channels.
- CMYK ConverterConvert between RGB/HEX and CMYK print values.
- Color PickerpopularPick a colour and copy it in any format.
- Contrast CheckerCheck WCAG contrast ratios for text and backgrounds.
- Palette GeneratorGenerate harmonious five-colour palettes from a base colour.
- Gradient GeneratorDesign linear or radial CSS gradients and copy the code.
- Box Shadow GeneratorCraft layered CSS box shadows visually.
- Glassmorphism GeneratorGenerate frosted-glass CSS with blur and transparency.
- Tint & Shade GeneratorCreate lighter and darker steps from one colour.
- Random Color GeneratorGenerate random colours with hex, RGB and HSL values.
- CSS Variables GeneratorTurn a palette into ready-to-paste CSS custom properties.
- Gradient Text GeneratorCreate CSS gradient text with a fallback colour.
- Border Radius GeneratorDesign custom rounded corners and copy the CSS.
- Text Shadow GeneratorCreate readable CSS text shadows visually.
- CSS Filter GeneratorCombine CSS filters and copy the resulting rule.
SEO
22 tools
- Meta Tag GeneratorpopularGenerate title, description, canonical and social meta tags.
- SEO Title GeneratorCreate title tag variants with a live length check.
- Meta Description GeneratorWrite meta descriptions within the ideal character range.
- Keyword Density CheckerAnalyse keyword frequency and density in content.
- Keyword ExtractorPull likely keywords and phrases out of a page of text.
- SEO Slug GeneratorCreate short, readable URL slugs from headlines.
- Robots.txt GeneratorBuild a robots.txt with allow, disallow and sitemap rules.
- Sitemap GeneratorGenerate an XML sitemap from a list of URLs.
- Schema Markup GeneratorBuild JSON-LD schema for articles, products and FAQs.
- Open Graph GeneratorGenerate Open Graph meta tags with a social preview.
- Twitter Card GeneratorCreate Twitter/X card meta tags and preview copy.
- SERP PreviewPreview how a title, URL and description may look in search.
- Heading AnalyzerCheck heading hierarchy and find missing levels.
- Alt Text GeneratorGenerate alt text suggestions from a descriptive filename.
- Hreflang GeneratorGenerate hreflang link tags for multilingual pages.
- Canonical URL GeneratorCreate a canonical link tag from a page URL.
- SEO Word CounterCheck content length against common SEO ranges.
- SEO Readability CheckerScore content readability for search and humans.
- UTM BuilderBuild trackable campaign URLs with UTM parameters.
- FAQ Schema GeneratorCreate FAQPage JSON-LD from questions and answers.
- SEO Title CheckerCheck pixel width, length and truncation risk.
- Meta Description CheckerReview description length and truncation risk.
Generators
20 tools
- Lorem Ipsum GeneratorGenerate classic placeholder paragraphs by count.
- Lorem Words GeneratorGenerate a specific number of filler words.
- Lorem Sentences GeneratorGenerate placeholder sentences for mockups.
- Paragraph GeneratorGenerate readable placeholder paragraphs.
- Fake Name GeneratorGenerate realistic-sounding names for test data.
- Fake Address GeneratorCreate fictional street addresses for fixtures.
- Fake Email GeneratorGenerate safe example email addresses.
- Fake Phone GeneratorCreate fictional phone numbers for UI demos.
- Fake Company GeneratorGenerate invented company names and descriptors.
- Job Title GeneratorGenerate plausible job titles by industry.
- Business Name GeneratorpopularCreate brandable business name ideas.
- Domain Name GeneratorGenerate short domain name combinations.
- Team Name GeneratorFind fun team names for leagues and projects.
- Project Name GeneratorGenerate codenames for projects and releases.
- Writing Prompt GeneratorGet a fresh creative writing prompt.
- Story Starter GeneratorGenerate opening lines for stories.
- Quote GeneratorGenerate short original-style quotes and aphorisms.
- Slogan GeneratorCreate tagline and slogan options for a brand.
- Acronym GeneratorTurn a phrase into a memorable acronym.
- Hashtag Set GeneratorGenerate reusable hashtag groups by niche.
Converters
22 tools
- Length ConverterConvert metres, feet, miles, inches and more.
- Weight ConverterConvert kilograms, pounds, ounces and stones.
- Temperature ConverterConvert Celsius, Fahrenheit and Kelvin.
- Area ConverterConvert square metres, feet, acres and hectares.
- Volume ConverterConvert litres, gallons, cups and millilitres.
- Speed ConverterConvert km/h, mph, knots and metres per second.
- Time ConverterConvert seconds, minutes, hours, days and years.
- Data Storage ConverterConvert bytes, KB, MB, GB and TB.
- Pressure ConverterConvert bar, PSI, pascal and atmosphere.
- Energy ConverterConvert joules, calories and kilowatt-hours.
- Angle ConverterConvert degrees, radians and gradians.
- Fuel Economy ConverterConvert MPG, L/100km and km/L.
- Cooking ConverterConvert cups, tablespoons, grams and ounces.
- Number Base ConverterConvert binary, octal, decimal and hexadecimal.
- Roman Numeral ConverterConvert numbers to Roman numerals and back.
- Fraction to DecimalConvert fractions to decimals and percentages.
- Byte ConverterConvert bits and bytes with binary or decimal units.
- Frequency ConverterConvert hertz, kilohertz, megahertz and gigahertz.
- Power ConverterConvert watts, kilowatts and horsepower.
- Force ConverterConvert newtons, pounds-force and kilogram-force.
- Torque ConverterConvert newton-metres, foot-pounds and inch-pounds.
- Aspect Ratio CalculatorFind missing width or height from an aspect ratio.
Calculators
25 tools
- Basic CalculatorpopularA fast, keyboard-friendly calculator for everyday sums.
- Scientific CalculatorEvaluate expressions with functions, powers and constants.
- Percentage CalculatorWork out percentages, increases and decreases.
- Percent Change CalculatorMeasure the percentage change between two values.
- Ratio CalculatorSimplify ratios and solve equivalent ratios.
- Average CalculatorCalculate mean, median and range from a list.
- Median CalculatorFind the median of any numeric list.
- Mode CalculatorFind the most frequent values in a dataset.
- Standard Deviation CalculatorCalculate population and sample standard deviation.
- Fraction CalculatorAdd, subtract, multiply and divide fractions.
- LCM & GCD CalculatorFind the least common multiple and greatest common divisor.
- Prime Number CheckerTest whether a number is prime.
- Prime FactorizationBreak any integer into its prime factors.
- Quadratic SolverSolve ax² + bx + c = 0 with real and complex roots.
- Triangle CalculatorCalculate triangle area and perimeter from base and height.
- Circle CalculatorFind circle area, circumference and diameter.
- Rectangle CalculatorCalculate rectangle area, perimeter and diagonal.
- Cylinder CalculatorFind cylinder volume and surface area.
- Sphere CalculatorCalculate sphere volume and surface area.
- Pythagorean TheoremSolve the hypotenuse or a missing leg.
- Slope CalculatorFind slope and line equation between two points.
- Distance CalculatorCalculate distance between two coordinate points.
- Midpoint CalculatorFind the midpoint between two points.
- Probability CalculatorCalculate single and complementary event probability.
- Permutation & CombinationCalculate nPr and nCr for any values.
Finance
22 tools
- Loan CalculatorpopularEstimate monthly payments and total interest.
- Mortgage CalculatorWork out mortgage payments with taxes and insurance.
- Auto Loan CalculatorCalculate car payments, interest and payoff.
- Credit Card PayoffEstimate how long it takes to clear a balance.
- Compound Interest CalculatorSee how investments grow with compounding.
- Simple Interest CalculatorCalculate interest without compounding.
- Savings Goal CalculatorFind the monthly saving needed to hit a target.
- Retirement CalculatorProject your retirement nest egg and gap.
- ROI CalculatorCalculate return on investment and net profit.
- CAGR CalculatorFind the compound annual growth rate.
- Break-Even CalculatorFind the units needed to cover fixed costs.
- Profit Margin CalculatorCalculate gross margin and markup from cost and price.
- Markup CalculatorSet selling price from cost and desired markup.
- Discount CalculatorFind sale price and money saved.
- Tip CalculatorSplit a bill and calculate the tip per person.
- VAT CalculatorAdd or remove VAT from a gross or net amount.
- Salary to HourlyConvert annual salary to hourly, weekly and monthly pay.
- Freelance Rate CalculatorWork out a sustainable hourly freelance rate.
- Invoice Total CalculatorAdd tax, discounts and fees to an invoice total.
- Currency ConverterConvert currencies using a rate you provide (offline-safe).
- Crypto Profit CalculatorCalculate profit, loss and percentage return on a trade.
- Inflation CalculatorSee the future value of money after inflation.
Health
20 tools
- BMI CalculatorpopularCalculate body mass index from height and weight.
- BMR CalculatorEstimate basal metabolic rate with Mifflin-St Jeor.
- TDEE CalculatorEstimate daily calorie needs from activity level.
- Calories Burned CalculatorEstimate calories burned by activity and time.
- Body Fat CalculatorEstimate body fat percentage with the US Navy method.
- Ideal Weight CalculatorEstimate a healthy weight range from height.
- Water Intake CalculatorEstimate a daily hydration target.
- Macro CalculatorSplit calories into protein, carbs and fat.
- Protein Intake CalculatorEstimate daily protein from body weight and activity.
- Running Pace CalculatorCalculate pace, speed and finish time.
- Finish Time CalculatorPredict race finish time from pace and distance.
- Heart Rate ZonesEstimate training zones from age and resting heart rate.
- One Rep Max CalculatorEstimate 1RM from weight and reps.
- Pregnancy Due DateEstimate a due date from the last period date.
- Sleep CalculatorFind bedtimes that fit 90-minute sleep cycles.
- Steps to DistanceConvert step counts into distance and calories.
- Waist-to-Hip RatioCalculate waist-to-hip ratio and risk category.
- Lean Body MassEstimate lean body mass from weight and height.
- BAC CalculatorEstimate blood alcohol content (informational only).
- Ovulation CalculatorEstimate a fertile window from cycle length.
Time & Date
20 tools
- Age CalculatorpopularCalculate exact age in years, months and days.
- Date DifferenceCount days, weeks and months between two dates.
- Add Days to DateAdd or subtract days from any date.
- Subtract DaysMove a date backwards by a chosen number of days.
- Countdown CalculatorSee time remaining until a future date.
- Workdays CalculatorCount business days between two dates.
- Epoch ConverterConvert Unix timestamps to dates and back.
- Timezone ConverterConvert a time between world time zones.
- Week Number CalculatorFind the ISO week number for any date.
- Day of Year CalculatorFind the ordinal day for a date.
- Leap Year CheckerTest whether a year is a leap year.
- Date FormatterFormat a date in ISO, locale and custom styles.
- Duration CalculatorAdd or subtract hours, minutes and seconds.
- Time Card CalculatorCalculate hours worked from start and end times.
- Pomodoro TimerA focused 25/5 work-and-break timer.
- StopwatchPrecise start, stop and lap timing.
- Countdown TimerSet a countdown with an audible finish.
- World ClockSee the current time in major world cities.
- Time Zone Meeting PlannerFind a reasonable overlapping meeting time.
- Days Until CalculatorCount down to holidays, launches or trips.
Security
20 tools
- Password GeneratorpopularCreate strong random passwords with custom rules.
- Password Strength CheckerEstimate entropy and crack time for a password.
- Passphrase GeneratorGenerate memorable multi-word passphrases.
- SHA-256 GeneratorHash any text with SHA-256 using Web Crypto.
- SHA-512 GeneratorGenerate a SHA-512 digest of text.
- SHA-1 GeneratorGenerate a SHA-1 digest for compatibility checks.
- HMAC GeneratorCreate keyed HMAC signatures with SHA-256.
- AES EncryptEncrypt text with AES-GCM and a password-derived key.
- AES DecryptDecrypt AES-GCM text created by this tool.
- Basic Auth GeneratorCreate a Base64 Basic Authorization header.
- Random Token GeneratorGenerate secure random tokens in hex or Base64.
- Secret ScannerScan text for API keys, tokens and private key patterns.
- Password Entropy CalculatorMeasure password entropy in bits.
- File ChecksumCompute SHA-256 checksums for local files.
- CRC32 GeneratorCalculate CRC32 checksums for text.
- PIN GeneratorGenerate random numeric PIN codes.
- Bulk Password GeneratorGenerate many passwords at once for provisioning.
- Wi-Fi Password GeneratorCreate strong Wi-Fi network passwords.
- Password Policy GeneratorDraft a clear password policy for a team.
- Secure Note EncryptorEncrypt a note with AES-GCM and export ciphertext.
Writing
18 tools
- Text SummarizerExtract the key sentences from a long piece of writing.
- Shorten TextTighten copy by trimming redundant sentences.
- Expand TextAdd supporting sentences to a short draft.
- Grammar CleanupFix spacing, capitalisation and common punctuation slips.
- Headline GeneratorGenerate headline variations for an article.
- Article Outline GeneratorBuild a logical outline from a topic.
- Blog Intro GeneratorDraft a blog introduction with a hook and premise.
- Paragraph RewriterRephrase sentences with light synonym and structure changes.
- Email RewriterPolish an email for clarity and tone.
- Product Description GeneratorTurn features into a benefit-led product description.
- Resume Bullet GeneratorTurn duties into achievement-oriented resume bullets.
- Story Idea GeneratorGenerate a premise, conflict and character seed.
- Essay Outline GeneratorCreate a thesis and structured essay outline.
- Tone AnalyzerEstimate the dominant tone of a passage.
- Readability ImproverSplit long sentences and simplify dense phrasing.
- Conclusion GeneratorDraft a conclusion that restates and resolves.
- Writing Title GeneratorGenerate titles in several editorial styles.
- Paragraph CounterCount paragraphs, sentences and words in a draft.
Web & CSS
20 tools
- CSS MinifierMinify CSS for production with safe whitespace removal.
- HTML MinifierCompress HTML by removing comments and extra whitespace.
- JS MinifierStrip comments and unnecessary whitespace from JavaScript.
- CSS BeautifierFormat compressed CSS into readable rules.
- HTML BeautifierIndent and tidy HTML source.
- SQL FormatterFormat SQL with uppercase keywords and indentation.
- Clamp CalculatorGenerate a fluid CSS clamp() between two viewport sizes.
- PX to REM ConverterConvert pixel values to rem based on root size.
- REM to PX ConverterConvert rem units back to pixels.
- Meta Viewport GeneratorGenerate a responsive viewport meta tag.
- Flexbox GeneratorConfigure flex layout and copy the CSS.
- CSS Grid GeneratorBuild a grid template and copy the CSS.
- Button CSS GeneratorGenerate accessible button CSS with hover states.
- Background Pattern GeneratorCreate CSS-only striped, dotted or grid backgrounds.
- CSS Filter GeneratorCombine filters and copy the CSS declaration.
- Breakpoint GeneratorGenerate common responsive breakpoint variables.
- Z-Index Scale GeneratorCreate a consistent z-index scale and CSS variables.
- CSS Reset GeneratorGenerate a modern, minimal CSS reset.
- HTML Entity ReferenceLook up and copy common HTML entities.
- Viewport Unit ConverterConvert between vw/vh and pixels.
Math
20 tools
- Basic CalculatorAdd, subtract, multiply and divide quickly.
- Scientific CalculatorEvaluate functions, constants and expressions.
- Percentage CalculatorSolve the three common percentage questions.
- Fraction CalculatorOperate on fractions with simplified results.
- GCD & LCM CalculatorFind greatest common divisor and least common multiple.
- Prime CheckerTest primality and find nearby primes.
- Prime FactorizationFactor integers into primes.
- Factorial CalculatorCalculate n! for reasonably sized integers.
- Fibonacci CalculatorGenerate Fibonacci numbers up to n.
- Quadratic CalculatorSolve quadratic equations, including complex roots.
- Slope CalculatorFind slope, angle and line equation.
- Distance CalculatorCompute Euclidean distance between points.
- Midpoint CalculatorFind the midpoint of a line segment.
- Triangle Area CalculatorCalculate area from base and height or three sides.
- Circle Area CalculatorFind area, circumference and diameter.
- Sphere Volume CalculatorCalculate sphere volume and surface area.
- Cylinder Volume CalculatorCalculate cylinder volume and surface area.
- Statistics CalculatorMean, median, mode, range and standard deviation.
- Probability CalculatorBasic event and complement probability.
- Permutation & CombinationCompute nPr and nCr.
Encoding
20 tools
- Base64 EncoderpopularEncode text to Base64 using UTF-8.
- Base64 DecoderDecode Base64 back to readable UTF-8 text.
- URL EncoderPercent-encode URLs and query values.
- URL DecoderDecode percent-encoded text.
- HTML EncoderEscape HTML special characters.
- HTML DecoderDecode HTML entities into characters.
- Hex EncoderConvert text to hexadecimal bytes.
- Hex DecoderConvert hex bytes back to text.
- Binary EncoderEncode text as binary digits.
- Binary DecoderDecode binary digits into text.
- ASCII ConverterConvert text to decimal ASCII codes and back.
- Unicode EscapeEscape text as \u Unicode code points.
- ROT13 ConverterApply the classic ROT13 letter substitution.
- Caesar CipherShift letters by a custom amount.
- Morse EncoderTranslate text into International Morse code.
- Morse DecoderDecode Morse code back into text.
- Base32 EncoderEncode UTF-8 text as RFC 4648 Base32.
- Base32 DecoderDecode Base32 text.
- NATO Alphabet ConverterSpell text with the NATO phonetic alphabet.
- Quoted-Printable EncoderEncode text in quoted-printable format.
Random
18 tools
- Random Number GeneratorpopularGenerate random numbers in any range.
- Random Integer GeneratorGenerate random whole numbers in bulk.
- Random Decimal GeneratorGenerate random decimals with chosen precision.
- Dice RollerRoll virtual dice from d4 to d100.
- Coin FlipFlip one or many fair coins.
- Lottery Number GeneratorGenerate sorted lottery picks without duplicates.
- Random PasswordGenerate a quick secure password.
- Random UUIDGenerate v4 UUIDs instantly.
- Random ColorGenerate random colour codes.
- Random Name PickerPick a name from your list at random.
- Team PickerSplit a list into random teams.
- List ShufflerShuffle any list using the Fisher–Yates algorithm.
- Random Letter GeneratorGenerate random letters for games and tests.
- Random Emoji GeneratorPick a random emoji from a curated set.
- Random Date GeneratorGenerate a random date between two bounds.
- Random Time GeneratorGenerate a random time of day.
- Playing Card DrawDraw a random card from a 52-card deck.
- Yes or No GeneratorGet a random yes, no or maybe decision.
QR & Barcode
10 tools
- QR Code GeneratorpopularCreate a high-resolution QR code for any text or URL.
- Wi-Fi QR CodeShare a Wi-Fi network without typing the password.
- vCard QR CodeCreate a scannable contact card QR code.
- Email QR CodeGenerate a QR code that opens a pre-filled email.
- SMS QR CodeCreate an SMS link QR with a message draft.
- Phone QR CodeMake a QR code that dials a phone number.
- URL QR CodeTurn any website URL into a scannable QR code.
- Barcode GeneratorGenerate Code 128, EAN and UPC barcodes.
- QR ScannerScan QR codes with your camera, entirely locally.
- WhatsApp QR CodeOpen a WhatsApp chat from a QR scan.
Mockups
20 tools
- Browser Window MockuppopularPlace a screenshot inside a clean browser chrome with traffic lights and URL bar.
- Laptop MockupFrame a website or app screenshot on a laptop with a soft studio shadow.
- Phone MockupShow a mobile screen inside a modern phone frame on a custom background.
- Tablet MockupPresent a design on a tablet with optional notch and orientation.
- Desktop Monitor MockupPut a wide screenshot on a monitor with a stand and ambient light.
- Dual Monitor MockupSpread a workstation scene across two screens for a polished case study.
- Instagram Post MockupPreview an image as a realistic Instagram feed post with avatar and actions.
- Instagram Story MockupPlace artwork into a phone-sized story frame with profile details.
- X Post MockupPreview an image inside an X/Twitter post card with author and engagement.
- LinkedIn Post MockupPreview a creative as a LinkedIn feed post with author and reactions.
- YouTube Thumbnail MockupCompose a thumbnail with a title, image and play treatment.
- App Store ScreenshotFrame an app screen with a headline for App Store screenshots.
- Play Store ScreenshotCreate a Google Play store screenshot with device framing and copy.
- Poster Wall MockupHang artwork in a framed poster scene with a warm interior wall.
- Business Card MockupDrop a design onto a business card on a studio surface.
- T-Shirt MockupPrint artwork onto a clean t-shirt mockup with a soft fabric shadow.
- Tote Bag MockupShow a logo or illustration on a canvas tote bag scene.
- Book Cover MockupWrap artwork around a book cover in a simple editorial scene.
- Packaging Box MockupPlace artwork on a standing product box with shelf lighting.
- Billboard MockupShow a campaign image on a roadside billboard at dusk.
Utilities
18 tools
- Online NotepadpopularA distraction-free notepad that autosaves locally.
- Text RepeaterRepeat text a set number of times with separators.
- Text SplitterSplit text into chunks by words or characters.
- Text RandomizerShuffle characters, words or lines of text.
- Unicode Character LookupFind characters by code point and copy them.
- Text to SpeechRead text aloud with your browser’s voices.
- Speech to TextDictate text with the browser speech recognition API.
- Emoji PickerSearch and copy emojis quickly.
- Special Character PickerCopy symbols, arrows, currency and punctuation.
- Browser InfoInspect your browser, viewport, platform and capabilities.
- Screen RulerMeasure on-screen distances in pixels.
- StopwatchStart, stop and lap a precise timer.
- Pomodoro TimerWork in focused 25-minute sprints.
- Countdown TimerSet a countdown for any duration.
- World ClockCheck times across major cities.
- Screen Color PickerPick colours from uploaded images and copy values.
- Random PickerPick a random item from a list.
- QR Code GeneratorMake a quick QR code from text or a URL.