Base64 encoder and decoder
Encode and decode text to and from Base64.
Convert Base64.
Everything happens on your device: nothing is uploaded to the internet.
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Base64 encoder and decoder: what it is for
The Base64 converter turns text into Base64 and back, handling accents and emoji correctly with UTF-8.
Base64 is used to send data in emails, URLs, APIs, tokens and config files.
How to use
- Paste the text or the Base64 code.
- Choose encode or decode.
- Copy the result.
When to use it
- Read API tokens and headers.
- Build basic auth credentials.
- Debug encoded data.
Frequently asked questions
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.