Base32 Encoder

Encode and decode Base32 per RFC 4648.

Runs locallyNo signupMobile readyCopyableFree

32Base32 Encoder

All processing happens locally

Text or Base32 string

Operation

Result

Base32 Encoder is a Base32 helper for TOTP secrets, processing runs locally in your browser, so your input never reaches a server.

Results update as you change values; copy or download when ready.

Paste or type your content into the input field at the top, or press the sample button to load demo data.
Adjust the options below the input, such as output format, separators, letter case or precision.
Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
When the result looks right, use the copy button in the corner, or download it as a local file.

Clean up stray spaces and line breaks before pasting for more accurate results.

Base32 versus Base64?+

Base32 uses only A-Z and 2-7, avoiding confusable characters, at about 1.6 times input length; Base64 is shorter but mixes case and symbols.

Why does TOTP use Base32?+

Secrets are often typed by hand, and Base32 excludes error-prone characters such as 0/O and 1/I.

Is Base32 Encoder free to use?+

Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.

Is the text I enter uploaded anywhere?+

No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.

Does Base32 Encoder work on a phone or tablet?+

Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.

Can I copy the result into my own document?+

Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.