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How to use Base32 Decoder

Paste a Base32-encoded string, and the tool decodes it back to plain text.

Frequently asked questions

Does it require uppercase input?

No — the decoder normalizes to uppercase before decoding. 'hello' and 'HELLO' are treated the same.

What if padding (=) is missing?

The decoder auto-pads the input to a valid multiple of 8 characters before decoding.

Why does Base32 use 2–7 instead of 0–9?

0 looks like O, 1 looks like I and L. Using 2–7 eliminates all visually ambiguous characters.

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