Base32 Encoder/Decoder
Encode text to Base32 or decode Base32 back to text
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
This tool converts plain text into Base32 encoding, or decodes a Base32 string back into readable text. It's handy for things like TOTP secret keys, case-insensitive identifiers, or filesystem-safe encoding. Everything runs directly in your browser, so nothing you type is sent to a server.
How to use
- Choose the Encode or Decode tab.
- In Encode mode, type or paste your plain text; in Decode mode, paste a Base32 string.
- The converted result appears automatically below.
- Click the copy button to grab the result instantly.
FAQ
- How is Base32 different from Base64?
- Base32 uses only A-Z and 2-7, making it case-insensitive and safe for systems that don't distinguish upper/lower case, such as certain URLs or filenames. Its output is somewhat longer than Base64.
- Why do I get an error when decoding?
- If the input contains characters outside the Base32 alphabet (A-Z, 2-7), the string is considered invalid and an error message is shown.
- Is my text sent to a server?
- No. All encoding and decoding happens instantly in your browser — nothing is uploaded anywhere.