TOTP 2FA Code Generator
Generate 2FA TOTP authentication codes and verification details. Fast, free, and fully client-side.
How the TOTP 2FA Code Generator Works
Generates and validates Time-based One-Time Passwords (TOTP / RFC 6238) for Two-Factor Authentication (2FA) apps like Google Authenticator and Authy.
Usage Example
Enter a 2FA secret key to generate live 6-digit verification codes with countdown timers.
Frequently Asked Questions
How does TOTP authentication work?
TOTP combines a shared secret key with the current Unix time step (typically 30 seconds) through HMAC-SHA1 to produce a rotating 6-digit code.