Base32 Encoder / Decoder
Encode text to Base32 or decode Base32 back to plain text
Convert text into Base32 or turn a Base32 string back into readable text. It's useful for TOTP secret keys, filename-safe encoding, and identifiers in systems that can't handle mixed case. Whatever you paste in is converted inside your browser and never sent to a server.
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Choose the Encode or Decode tab.
- Paste your plain text in Encode mode, or a Base32 string in Decode mode.
- The result appears below automatically.
- Click Copy to send the result straight to your clipboard.
FAQ
- How is Base32 different from Base64?
- Base32 uses only A–Z and 2–7, so it's case-insensitive and safer for URLs and systems that don't distinguish upper- and lowercase. The trade-off is that the encoded string is a bit longer than Base64.
- Why am I getting an error when decoding?
- If your string contains any character outside the Base32 alphabet (A–Z, 2–7), it isn't valid Base32 and the tool shows an error message.
- Is my text sent to a server?
- No. All encoding and decoding happens instantly in your browser, with no data sent anywhere.