Encodeur et décodeur Base32

Comment utiliser cet outil

1. 1

   Choose 'Encode' to turn text into Base32, or 'Decode' to turn Base32 back into text, using the mode dropdown.

2. 2

   Type or paste your input into the text box — UTF-8 text when encoding, or a Base32 string when decoding.

3. 3

   Read the result in the gray output panel below; it updates instantly as you type, with no button to press.

4. 4

   Select and copy the output text to use it elsewhere.

Qu'est-ce que l'encodeur et décodeur Base32 ?

Cas d'usage courants

• Inspecting a TOTP/2FA setup string by decoding the Base32 secret an authenticator app expects.

• Encoding a short identifier into a case-insensitive form safe to drop into a DNS label or subdomain.

• Hand-checking the output of a server library against a known-good Base32 implementation while debugging.

• Producing tokens or codes meant to be read aloud or typed without confusing 0/O or 1/I/l.

• Decoding a Base32 string copied from a config file or QR-code payload to see the underlying text.

• Teaching or learning how bit-level encodings group data, by watching how input maps to 5-bit chunks.

Questions fréquentes