What is Base32 encoding?

Base32 encoding converts binary data into a text format using 32 characters (A–Z and 2–7). It is commonly used in 2FA secret keys because it avoids ambiguous characters.

Is my data safe when using this tool?

Yes. All encoding and decoding happens entirely in your browser using JavaScript. No data is sent to any server.

What is Base32 used for?

Base32 is used for TOTP 2FA secret keys, DNS labels, file names on case-insensitive systems, and anywhere a human-readable binary encoding is needed.

🔢 100% Browser-Based · RFC 4648

Base32 & TOTP Tools

Encode or decode Base32 strings, and verify whether a 6-digit TOTP authentication code is currently valid. All computation happens in your browser.

Text or Hex to Encode

Base32 Output

Base32 String to Decode

Decoded Text

Secret Key (Base32)

6-Digit Code to Verify

Or generate a new code for this secret key: use the 2faco TOTP generator →