2FA Verification Code Generator
2FA Verification Code Generator
Free online 2FA code generator. Enter your 2FA secret key to generate six-digit TOTP one-time passwords in real time. Fully compatible with popular authenticator apps such as Google Authenticator and Microsoft Authenticator; no software installation is required—just open the webpage and start using it.
Instructions
- Enter the 2FA key (Base32 encoded, usually a string of uppercase letters and numbers) included in the account you purchased.
- Click the "Generate" button, and the system will instantly calculate a 6-digit dynamic verification code based on the standard TOTP algorithm.
- The verification code refreshes automatically every 30 seconds, and the page displays a countdown. A new verification code will be automatically generated after the code expires.
- Generated codes are fully compatible with Google Authenticator, Authy, Microsoft Authenticator, and other standard TOTP authenticator apps.
What is 2FA?
Two-Factor Authentication (2FA) is a security mechanism that requires users to provide two different verification factors to confirm their identity. In addition to a traditional password, 2FA also requires a dynamically generated verification code in real time, which greatly enhances account security.
TOTP (Time-based One-Time Password) is the most common 2FA method. It generates a one-time code from the current time and a shared secret, and refreshes every 30 seconds. This tool uses the standard TOTP algorithm (RFC 6238), so its codes are compatible with mainstream authenticator apps.
Enter your key and click "Generate", the verification code will appear here