SECURITYOpen source

TOTP Authenticator Code Generator Generate & Verify RFC 6238 Two-Factor Codes

Generate time-based one-time passwords from a base32 secret or otpauth URI, watch the countdown, and produce an enrollment QR code. Everything runs locally in your browser.

Back home

Use test secrets here, not your real ones.This page never sends anything to a server, but a shared authenticator secret pasted into any browser tab is a secret you should rotate.

Base32 secret or otpauth:// URI

AlgorithmDigitsPeriod (seconds)

Current code

------

30s

Enrollment QR code

Issuer

Account

otpauth URI

Verify a code

Code from an authenticator app

Checks the previous, current and next window, the same one-step drift most servers allow.