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Developer Utilities · Free tool

Base64 Encoder & Decoder

Encode text to base64 or decode base64 back to text. UTF-8 safe. Runs entirely in your browser.

Updated April 2026

What it does

A free base64 encoder and decoder. Works in both directions, handles UTF-8 correctly (emojis, accented characters). Everything runs locally in your browser.

Base64 is used in APIs, data URIs, email attachments, and JWT tokens. If you work with APIs or web development, you’ll hit it weekly. See our API guide.

How to use it

  1. Paste text in the input.
  2. Click Encode to convert to base64.
  3. Click Decode to convert back to plain text.
  4. Copy the result with one click.