What can I do with Base64 Encoder?

Encode text to Base64 using UTF-8. Base64 Encoder is part of the Encoding shelf on utils.sbs and is designed for quick, one-off tasks.

Is Base64 Encoder free to use?

Yes. Base64 Encoder is free, requires no account, and has no per-file or per-use charge.

Are my files uploaded when I use Base64 Encoder?

No. Base64 Encoder is designed to process your input locally in the browser. Files are not uploaded to a server for processing.

What formats does Base64 Encoder support?

It works with plain text, code, markup and structured text, and returns a downloadable text file.

Can I use Base64 Encoder on my phone?

Yes. Base64 Encoder is responsive and works in modern mobile browsers. Very large files may be limited by the device's available memory.

Encoding tool

Base64 Encoder

Encode text to Base64 using UTF-8.

Runs on-deviceNo sign-upFree

All encoding tools

Workspace

Base64 Encoder

Runs locally

Input

16 chars · 3 wordsStays in this tab

Output

The guide

By the utils.sbs team · Reviewed November 2026 · How we build and review tools

Quick answer

Base64 Encoder is a free browser-based encoding tool. Encode text to Base64 using UTF-8. It runs with JavaScript locally, requires no account and does not upload your files. Open the page, add your input, adjust any options and download the result.

What is Base64 Encoder?

Base64 Encoder is a free browser-based encoding tool from utils.sbs. Encode text to Base64 using UTF-8. It is built for quick, focused jobs: open the page, add your input, adjust the options and take the result with you. No account, install or server upload is required.

At a glance

Category	Encoding
Input	Plain text, code, markup or JSON
Output	A downloadable text or code file
Engine	JavaScript
Processing	In your browser
Price	Free
Account	Not required

How Base64 Encoder works

Text is processed in the browser with JavaScript and downloaded from a local blob. Nothing is uploaded.

How to use Base64 Encoder

1Open Base64 Encoder and add your input.
2Use the default settings, or choose the format or detail level that matches your goal.
3Run the tool, check the preview or result, and download the output.

When to use Base64 Encoder

Clean, transform or compare text before using it elsewhere.
Convert markup, JSON or structured text between formats.
Count, format or inspect content quickly in the browser.

Limitations

Very large inputs may be limited by the browser's available memory.

Privacy and accuracy

Base64 Encoder processes its input in the browser whenever the platform API allows it. Files and values are not uploaded to a server for processing, and the tool does not require an account. For calculations, use the result as a reference and verify important decisions against the source formula or a qualified professional. Read our methodology.

FAQ

Base64 Encoder questions

What can I do with Base64 Encoder?
Encode text to Base64 using UTF-8. Base64 Encoder is part of the Encoding shelf on utils.sbs and is designed for quick, one-off tasks.
Is Base64 Encoder free to use?
Yes. Base64 Encoder is free, requires no account, and has no per-file or per-use charge.
Are my files uploaded when I use Base64 Encoder?
No. Base64 Encoder is designed to process your input locally in the browser. Files are not uploaded to a server for processing.
What formats does Base64 Encoder support?
It works with plain text, code, markup and structured text, and returns a downloadable text file.
Can I use Base64 Encoder on my phone?
Yes. Base64 Encoder is responsive and works in modern mobile browsers. Very large files may be limited by the device's available memory.

Keep going

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