TOTP / 2FA Generator
Generate live TOTP (RFC 6238) codes from a Base32 secret — the algorithm behind Google Authenticator.
Generate live TOTP (RFC 6238) codes from a Base32 secret — the algorithm behind Google Authenticator.
How TOTP works
TOTP (Time-based One-Time Password, RFC 6238) generates a 6-digit code every 30 seconds using a shared secret + current Unix timestamp + HMAC-SHA1. This is the algorithm behind Google Authenticator, Authy, and 1Password TOTP.
⚠️ All processing is done in your browser using the Web Crypto API. Secrets never leave your device.