TOTP Generator

To generate a TOTP code, enter your Base32-encoded secret key in the input field above, select your preferred algorithm (SHA-1, SHA-256, or SHA-512), choose 6 or 8 digits, and click 'Generate TOTP.' The tool will instantly produce a time-based one-time password that refreshes every 30 seconds. You can also scan a QR code with your camera or upload a QR image to auto-fill the secret.

TOTP (Time-based One-Time Password) is used for two-factor authentication (2FA) to add an extra layer of security to online accounts. When you log in, you enter your password plus a temporary 6 or 8-digit code generated by an authenticator app or this TOTP generator. Services like Google, GitHub, AWS, Microsoft, and banking apps use TOTP to protect accounts from unauthorized access, even if your password is compromised.

Yes, TOTP is significantly more secure than SMS-based 2FA. SMS codes can be intercepted through SIM swapping, SS7 attacks, or social engineering. TOTP codes are generated locally on your device using a shared secret and the current time, so they are never transmitted over a network. This makes TOTP immune to SIM swap attacks, SIM cloning, and SMS interception. Security experts and organizations like NIST recommend TOTP over SMS for two-factor authentication.

TOTP offers several key benefits: Enhanced security — codes expire every 30 seconds, making them useless if intercepted. No network required — codes are generated offline on your device. Cross-platform compatibility — works with Google Authenticator, Authy, Microsoft Authenticator, and dozens of other apps. No SIM dependency — immune to SIM swap and phone number hijacking attacks. Wide adoption — supported by Google, GitHub, AWS, Dropbox, and most major online services.

To generate a TOTP, you need a shared secret key provided by the service you're authenticating with. Enter this Base32-encoded secret into the generator above. The tool uses the RFC 6238 algorithm to combine your secret with the current timestamp, producing a unique code that changes every 30 seconds. You can use our online TOTP generator, install an authenticator app on your phone, or use a JavaScript TOTP generator library in your own applications.

OTP (One-Time Password) is a general term for any password that is valid for only one login session or transaction. TOTP (Time-based One-Time Password) is a specific type of OTP that uses the current time as a factor in generating the code. While all TOTPs are OTPs, not all OTPs are TOTPs. Other OTP types include HOTP (HMAC-based, uses a counter instead of time) and SMS OTP (sent via text message). TOTP is the most popular form of OTP for two-factor authentication due to its balance of security and usability.

Yes, TOTP is highly secure when implemented correctly. The security relies on the secrecy of your shared key, the difficulty of guessing it (typically 160+ bits of entropy), and the short 30-second validity window. A new code is generated every 30 seconds, so even if an attacker captures your code, it expires quickly. TOTP is resistant to replay attacks, phishing (when used with hardware keys), and offline brute-force attacks. The main risk is if the shared secret itself is compromised, which is why you should always store it securely.

When a service provides a QR code for 2FA setup, it contains an otpauth://totp/ URI with your secret embedded in it. To use this TOTP generator, click 'Scan with Camera' and point your device camera at the QR code, or click 'Upload QR Image' to select a saved QR code image file. The tool will automatically decode the QR code, extract the secret, and configure the algorithm, digit count, and time period. You can also manually extract the secret= parameter from the URI and paste it into the input field.

TOTP codes are temporary, single-use passwords typically 6 or 8 digits long that are generated using the Time-based One-Time Password algorithm (RFC 6238). Each code is valid for a short window, usually 30 seconds, after which a new code is generated. These codes are used as the second factor in two-factor authentication — you enter them alongside your password when logging in. TOTP codes are generated by combining a shared secret key with the current time using HMAC-SHA-1, SHA-256, or SHA-512 hashing.

Your TOTP code is generated by your authenticator app (like Google Authenticator, Authy, or Microsoft Authenticator) or by entering your secret into this online TOTP generator. When a service asks for your 2FA code, open your authenticator app to see the current 6 or 8-digit code. If you don't have an authenticator app set up, use our generator above by entering the secret key you saved when enabling 2FA on your account. The code refreshes automatically every 30 seconds.