Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 to plain text. Runs entirely in your browser.

Plain Text

Base64 Output

URL-safe Base64 (replace +/ with -_)

✓ Bidirectional

Switch between encode and decode modes with a single click.

✓ URL-safe Mode

Generate URL-safe Base64 with -_ instead of +/ padding.

✓ Private

All processing happens locally. No data sent to any server.