Base32 Encoder and Decoder Online
Encode and decode text to and from Base32 (RFC 4648) in your browser.
🔒 100% client-side — no data sent
Convert text or data to Base32 and decode it instantly (RFC 4648). Ideal for TOTP keys, identifiers and binary data that must travel as text. Everything runs in your browser: no data is ever sent to a server.
What is it for?
- ▸ Generate or read a TOTP/2FA secret key
- ▸ Encode binary data as safe text
- ▸ Decode a Base32 string received from an API
- ▸ Check an RFC 4648 encoding without case issues
FAQ
What is the difference between Base32 and Base64?
Base32 uses only uppercase letters and digits, making it case-insensitive and easier to read, at the cost of larger output than Base64.
Is Base32 encryption?
No, it is just a reversible encoding. Anyone can decode it, so it does not protect sensitive data.
Is my data sent to a server?
No, all encoding and decoding run locally in your browser.