Base64 encoder / decoder
Encodes text to base64 or decodes it back.
- Free
- No sign-up needed to try
- Runs in your browser
Sign in to use this tool
Base64 encoder / decoder is free once you're signed in — one quick account unlocks every tool on Alux Tools, no payment, ever.
How this works
Uses the browser's built-in base64 codec to convert text to and from base64.
Nothing you type is sent to a server.
Frequently asked questions
Is the base64 encoder / decoder free?
Yes. Base64 encoder / decoder is free to use, with no software to install and no hidden fees.
Is my data uploaded anywhere?
No. This tool runs entirely in your browser, so what you enter or select never leaves your device.
Does it work on phones and tablets?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.