Base32 Decode Encode

Paste your Text or Base32 into the box above and the Result appears instantly below — there is no button to press and nothing to upload. The whole conversion runs in your browser, so you can copy the result or download it as a file. If the input has a problem, a clear message explains exactly what to fix.

Yes on both counts. It is completely free with no signup or limits, and it is private because everything happens locally in your browser — your data is never sent to a server. That makes it safe for confidential exports and customer data, and it keeps working offline once the page has loaded.

Yes — use the Mode selector above the box to switch between encoding and decoding. The result updates instantly either way, and round-tripping (encode then decode) always returns exactly what you started with, including non-English characters and emoji.

There is no fixed limit because nothing is uploaded — the only real constraint is your device's memory, so even large files convert quickly on a normal computer. Very large inputs are handled more comfortably on a desktop browser than on a phone.

Yes. It runs in any modern browser on Windows, Mac, Linux, iPhone and Android with nothing to install, and works offline once loaded. The result can be copied or downloaded on any device.