Base64 Encode / Decode

Encode and decode Base64 strings

URL-safe

Plain text

Result

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About the Base64 Encode / Decode

Encode text to Base64 or decode Base64 back to plain text instantly. This online Base64 encoder/decoder fully supports Unicode (UTF-8) — emojis, Bangla, Chinese, and any other script — plus URL-safe Base64 for JWT and web tokens. Conversion happens live as you type, entirely in your browser.

How to use

1Choose Encode or Decode mode.
2Type or paste your text — the result updates live.
3Enable URL-safe to swap +/ for -_ in tokens and URLs.

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Base64 Encode / Decode is part of DevKit — 100 free, privacy-first tools for developers, students, and everyone, built by Minhazul Ashim. Everything runs in your browser; your data never leaves your machine.