Encode text to Base32 or decode Base32 back to text

Encode or decode bytes with the RFC 4648 Base32 alphabet.

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ToolBase32 Encode/Decode
Input
Output
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Preview

How it works

Five-bit groups map to A–Z and 2–7 with padding completing eight-character quanta; decoding reverses the bit accumulator into bytes. Case and padding follow the selected mode.

  • Letters and digits suit human-transcribed tokens.
  • Expansion is larger than Base64.

Worked example

Encode Text
Encode a greeting to Base32
Input
											Hello, World!
Output
												JBSWY3DPFQQFO33SNRSCC===

When to use this

TOTP secrets, provisioning codes, and DNS-safe tokens use Base32.

Edge cases

  • 0, 1, 8, and 9 are not standard digits.
  • Wrong padding leaves an incomplete final quantum.
  • Strict mode rejects visually confused O and 0.

References