RFC 4648 alphabet

Base32 Encoder & Decoder

Convert text to and from Base32 instantly. Everything runs locally in your browser — nothing is uploaded.

Base32 output

How it works

1

Choose encode or decode

Toggle between converting text to Base32 or Base32 back to text.

2

Type or paste

The output updates live as you type, using the standard RFC 4648 alphabet.

3

Copy the result

Copy the converted value with one click.

FAQ

What is Base32 used for?

Base32 encodes binary data as uppercase letters and digits 2-7, avoiding characters that are easy to confuse. It's commonly used for TOTP secret keys, DNS records and filesystem-safe identifiers.

Is this the standard Base32 alphabet?

Yes, this tool uses the RFC 4648 alphabet (A-Z, 2-7) with = padding, the most widely used Base32 variant.

Is my text sent to a server?

No. Encoding and decoding happen locally in your browser; nothing is uploaded.

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