Base64 Encoder & Decoder

Encode text to Base64 or decode a Base64 string back to text.

Convert plain text to Base64 encoding, or paste a Base64 string to decode it back to readable text — both directions in one tool.

Your files and text are processed locally in your browser — nothing is uploaded to a server.

Base64 Encoder / Decoder tool

How to Use Base64 Encoder / Decoder

  1. Paste your text or Base64 string.
  2. Click Encode or Decode.
  3. Copy the result.

Features

  • Encode and decode in one tool
  • Supports Unicode text safely
  • Clear error message for invalid Base64
  • Runs entirely in your browser

Frequently Asked Questions

Can this handle emoji and non-English text?

Yes, it correctly encodes and decodes Unicode text, not just plain ASCII.