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Base32 Encode / Decode

Base32 encoder and decoder (RFC 4648). Convert text to Base32 and back online in your browser.

About this tool

Encode text to Base32 or decode it back. Base32 uses 32 case-insensitive characters (A–Z, 2–7), which makes it robust for things humans type or read aloud — TOTP secrets, file names and DNS labels.

Frequently asked questions

Where is Base32 used?

TOTP/2FA shared secrets, some file systems, and anywhere case-insensitive, typo-resistant encoding helps. It is bulkier than Base64 but easier to transcribe.

Is it padded?

Yes, output is padded with = to a multiple of 8 characters, per RFC 4648.

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