Base32 Encoder and Decoder
Encode text to Base32 or decode a Base32 string back to plain text, using the standard RFC 4648 alphabet. Base32 represents binary data with just twenty six uppercase letters and the digits two through seven, which makes it case insensitive and safe to read aloud, type by hand, or embed in URLs and file names without confusion. You will see Base32 in TOTP two factor authentication secrets, some identifiers, and systems that need human friendly tokens. This tool pads the output correctly and ignores padding and casing when decoding, so it round trips cleanly. Paste your input, choose encode or decode, and copy the result. Everything is processed locally in your browser, so your tokens and secrets are never sent to a server.
How to use Base32 Encode / Decode
- Paste text to encode to Base32.
- Read the RFC 4648 Base32 output.
- To decode, paste Base32 and switch mode.
- Copy the result.
Frequently asked questions
Which Base32 standard is used?
It uses the standard RFC 4648 Base32 alphabet, the same one used for TOTP secrets and many case-insensitive identifiers.
Why choose Base32 over Base64?
Base32 uses only uppercase letters and digits, avoiding ambiguous characters, which makes it case-insensitive and easier to type or read aloud.
Can it decode Base32 back to text?
Yes. Paste a Base32 string and it decodes it back to the original text.
What is Base32 Encode / Decode?
Encode text to Base32 or decode a Base32 string back to plain text, using the standard RFC 4648 alphabet. Base32 represents binary data with just twenty six uppercase letters and the digits two through seven, which makes it case insensitive and safe to read aloud, type by hand, or embed in URLs and file names without confusion.
Is Base32 Encode / Decode free to use?
Yes. Base32 Encode / Decode is completely free, with no sign-up and no usage limits.
Does Base32 Encode / Decode work in a web browser?
Yes. Base32 Encode / Decode runs in any modern web browser. There is nothing to download or install.
Is my data private with Base32 Encode / Decode?
Yes. Base32 Encode / Decode runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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