Encoding
Convert between encodings and try classic ciphers. All made and decoded on your device.
20 free encoding tools. Every tool runs in your browser, works without an account, and processes files locally whenever the browser allows it.
By the utils.sbs team · Reviewed November 2026
The shelf
All encoding tools
20 tools · updated for 2026
- 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.
How this shelf works
About encoding tools
Encoding tools handle the small, repeatable jobs that show up between real work: base64, hex, ciphers. They are built as focused utilities, so each page does one job without asking you to create an account or install software.
Open a tool, add your input, adjust the settings, and download the result. Processing happens in the browser using the platform APIs available for that file type. Files are not uploaded to a server, so the tool keeps working offline once the page has loaded.
Looking for something else? Browse the full tool index or search the catalogue from the homepage.
Encoding tool questions
Are encoding tools free?
Yes. Every encoding tool on utils.sbs is free, requires no account, and has no per-file or per-use charge.
Are my files uploaded when I use a encoding tool?
No. The tools are designed to process input in the browser whenever the platform API allows it. Files are not uploaded to a server for processing.
Do I need to install anything to use these tools?
No. Everything runs in a modern web browser. Open a tool page, use the workspace, and download the result.
How do I choose the right encoding tool?
Each tool page describes what it does, its input and output formats, the engine it uses, and its limitations. Start with the description that matches your job, then open the tool page for the workspace and step-by-step guide.