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Base64 Encode

Encodes text as UTF-8 bytes, then standard Base64.

Your inputs stay in your browser. No account required.
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How Base64 Encode works

Encodes text as UTF-8 bytes, then standard Base64.

Try an example

Hello → SGVsbG8=.

Good to know

Base64 is encoding, not encryption. Input stays in this tab and is never sent to analytics. Limit 100,000 characters. No input is executed.

Your privacy

Processing happens on this device for this tool. We do not upload your input, put it in share links or save it to your favourites. Closing this tab discards the working input; downloaded results remain wherever you save them.

When this tool is useful

Use Base64 Encode when you need a quick, local result and want the rule or limitation visible alongside it.

How to use it

  1. Enter the input using the labels shown.
  2. Run the operation and review the result.
  3. Download or copy the result only after checking it.

Checks before you rely on the result

  • Base64 is encoding, not encryption. Input stays in this tab and is never sent to analytics. Limit 100,000 characters. No input is executed.
  • Keep the original input when the operation creates a new copy.
  • Use the related tools below when the next step needs a different format.

This page is maintained with the tool implementation and its deterministic tests. If the result looks wrong, report the issue with a non-sensitive example.

Read the Base64 Encode instructions

A useful next step

JSON Validator
JSON Formatter
Base64 Decode
Made for clarity. Built to be useful.Report an issue