Base64 encode / decode

Encode text to Base64 or decode Base64 back to text with full UTF-8 support and an optional URL-safe alphabet.

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Text to encode

URL-safe Base64 (- and _ , no padding)

Base64 output

How to use Base64 encode / decode

Encode text to Base64 or decode Base64 to text as you type. Unicode characters such as accents and emoji are handled correctly using UTF-8.

URL-safe — uses - and _ instead of + and / and drops padding, as used in JWTs and URLs
Swap — move the output back into the input to reverse the operation

Base64 is an encoding, not encryption — anyone can decode it. Conversion happens locally in your browser.

Is Base64 encode / decode free?

Base64 encode / decode is a free online tool on ReallyUseful.Tools. No account is required.

Does Base64 encode / decode run in my browser?

Base64 encode / decode is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.

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