What is Base32 encoding used for?

Base32 uses a 32-character alphabet (A-Z, 2-7) which is case-insensitive and avoids visually ambiguous characters, commonly used in 2FA TOTP secret keys and human-entered verification codes.

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Encoding & Decoding

Base32 Encoder & Decoder

Encode and decode strings to RFC 4648 Base32 format for 2FA seeds and tokens.

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Base64 Encoder/Decoder

Encode or decode Base64 strings

Hex to Base64 Converter

Convert raw hexadecimal byte strings into Base64 encoding and vice versa

2FA / TOTP Authenticator Generator

Generate RFC 6238 TOTP security codes, base32 secrets, and otpauth:// QR URIs

How to Use Base32 Encoder & Decoder

Paste plain text or Base32 into the input box.
Click "Encode to Base32" or "Decode to Plain Text".
Copy the converted result.

Frequently Asked Questions

What is Base32 encoding used for?: Base32 uses a 32-character alphabet (A-Z, 2-7) which is case-insensitive and avoids visually ambiguous characters, commonly used in 2FA TOTP secret keys and human-entered verification codes.

Sources & References

Primary references: RFC 4648: Base-N Encodings.

Review policy: references and behavior notes are checked whenever the tool implementation changes.