TOTP / OTP Generator
Generate RFC 6238 time-based one-time passwords (TOTP) online from a secret key. Free TOTP generator for testing 2FA flows — no sign-up needed.
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About TOTP / OTP Generator
Generate RFC 6238 time-based one-time passwords (TOTP) — the same codes produced by apps like Google Authenticator. • Enter a Base32 secret key to generate a live, auto-refreshing 6-digit code • Countdown ring shows exactly when the code will rotate (every 30 seconds) • Uses the Web Crypto API (HMAC-SHA1) — no libraries, no server calls • Useful for testing 2FA flows without reaching for your phone