Base32 Decode
Decode text to and from Base32 format. Free, fast, and secure Base32 decoder. 100% client-side processing, no server upload.
Input (Base32 Decode)
What is Base32 Decode?
Base32 is a binary-to-text encoding using 32 printable characters (A-Z and 2-7), designed to be more human-readable and error-resistant than Base64. It's commonly used in applications where data might be manually typed or spoken, like two-factor authentication (2FA) codes.
How to Use Base32 Decode
1. Paste your Base32-encoded text into the input field. 2. The decoded result appears instantly in the output field. 3. Click "Copy" to copy the decoded text to your clipboard. 4. Use "Clear" to reset and start over.
When to Use Base32 Decode
Use Base32 decoding to extract 2FA secrets, read QR code data, or decode other Base32-encoded identifiers.
How Base32 Decode Works
Base32 divides binary data into 5-bit chunks (2^5=32 values), maps each to characters A-Z and digits 2-7 (avoiding 0/O and 1/I/L confusion), and pads with "=" to complete 40-bit blocks. The encoding expands data size by approximately 60%.
Common Use Cases
- Two-factor authentication (TOTP/HOTP)
- QR codes for 2FA apps
- Human-readable identifiers
- DNS-safe encoding
- Case-insensitive systems
- Torrent magnet links
Security Note
⚠️ Base32 is encoding, not encryption. It provides no security and is easily decoded.
FAQs
1 What is Base32 used for?
Base32 is primarily used for two-factor authentication (totp/hotp), qr codes for 2fa apps, and many other applications where base32 encoding is needed.
2 Is Base32 secure?
Base32 is an encoding method, not encryption. It provides no security and can be easily reversed. Never use it to protect sensitive data.
3 Is this tool safe to use?
Yes! All decodeing happens in your browser. Your data never leaves your device and is not sent to any server.