Developer Utilities · Free tool
Base32 Encoder & Decoder
RFC 4648 Base32 encode/decode. Same alphabet as TOTP/2FA secrets and URL-safe identifiers. UTF-8 safe.
IZZGKZJAKRXW63BAIFZGK3TB
Base32 (RFC 4648) is what TOTP/2FA apps use to store the shared secret, and what some URL-safe identifier schemes use. It avoids the visually-confusable characters 0/1/8 and case sensitivity of Base64.
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What it does
RFC 4648 Base32 encoder and decoder. Base32 is what TOTP/2FA apps use to store the shared secret (e.g. JBSWY3DPEHPK3PXP), and what some URL-safe identifier schemes prefer for human readability.
Avoids the visually confusable 0/1/8/B characters and case-sensitivity issues of Base64. Pure client-side, no dependencies.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/base32-codec" width="100%" height="720" frameborder="0" loading="lazy" title="Base32 Encoder & Decoder" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Toggle between encode and decode.
- Encode: type text, get RFC 4648 Base32 string (with = padding).
- Decode: paste Base32 string, get original text back.
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