Base32 Encoder / Decoder
Encode text to Base32 or decode Base32 strings back — the alphabet TOTP apps and authenticator URIs use. Both directions, fully local.
How to Use the Base32 Encoder / Decoder
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Frequently Asked Questions
What is Base32 encoding?
Base32 encodes binary data into 32 ASCII characters (A-Z, 2-7). It produces longer output than Base64 but is human-readable and avoids ambiguous characters.
When would I use Base32 vs Base64?
Use Base32 when you need human-readable encoding (TOTP secrets, QR codes) or systems that only support uppercase letters. Base64 is more compact for general use.
Does it handle UTF-8?
Yes. UTF-8 text is properly encoded to Base32 and decoded back to the original text, preserving all characters including non-ASCII.
Can I decode Base32 to text?
Yes. Paste a Base32 string and the tool decodes it to the original text. The tool handles both standard and padded Base32 formats.
When using Base32 Encoder / Decoder, is the conversion done locally?
Yes. All encoding and decoding happens in your browser. No data is transmitted to any server.
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Last updated October 2026