Is TOTP Generator completely free?

Yes, completely free with unlimited TOTP code generation. No registration, login, or account creation required. No hidden fees or premium features.

What is TOTP and how does it work?

TOTP (Time-based One-Time Password) is a six-digit security code that changes every 30 seconds. It uses your secret key and current time to generate unique codes for two-factor authentication, making accounts much more secure than passwords alone.

Which services support TOTP codes?

TOTP is supported by 1000+ services including Google, GitHub, Microsoft, Amazon, Facebook, Twitter, Apple, Dropbox, and most banks. Check your account security settings under 'Two-Factor Authentication' or '2FA' for the option.

Is my secret key safe with this TOTP Generator?

Yes, completely safe. All processing happens entirely in your browser—your secret key is never sent to any server. We don't store, log, or track any of your data. Close the tab and nothing is saved.

How long is a TOTP code valid?

Standard TOTP codes are valid for 30 seconds. After 30 seconds, a new 6-digit code automatically generates. Some services accept codes for 60 seconds for clock skew tolerance, but always enter codes quickly.

What is a secret key and where do I find it?

A secret key is a 32-character Base32-encoded string that generates your TOTP codes. Find it during 2FA setup—usually displayed as a QR code or text key. Scan the QR code or manually enter the key text into your authenticator app.

Does this TOTP Generator work offline?

Yes, it works completely offline once loaded. Your browser generates codes using your device's clock and your secret key—no internet connection needed after the initial page load.

Can I use TOTP on mobile devices?

Yes, this TOTP Generator works on all devices: iPhone, Android, iPad, tablets, and desktops. It's responsive and mobile-optimized. For convenience, most people use authenticator apps like Google Authenticator or Authy instead.

What if my TOTP codes don't work?

Usually caused by incorrect time sync. Ensure your device's clock is accurate by checking date/time settings. Verify you entered the secret key correctly (it's case-sensitive). Wait for a new 30-second cycle to begin before retrying.

How do I backup my secret keys?

Write down or securely save your secret key when setting up 2FA—not the generated codes. Store it in a password manager like 1Password or Bitwarden, or write it down and lock it in a safe. Never share it with anyone.

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TOTP Generator — free

Generate Time-based One-Time Passwords (TOTP) for two-factor authentication.

Secret Key (Base32)

Enter the base32 secret from your app's 2FA setup.

Privacy Notice

Your secret key never leaves your browser. All TOTP calculations are done locally using the Web Crypto API.

How to use TOTP Generator

Enter your Secret Key

Paste your Base32-encoded secret key into the 'Secret Key' input field. You can find this 32-character code in your authenticator app settings or account security page. Click the paste icon if copying from your clipboard.

Select Time Step and Digits

Choose your time step interval (default 30 seconds) and number of digits (typically 6). Most services like Google, GitHub, and Microsoft use 30-second intervals with 6-digit codes. Adjust these only if your service requires different settings.

Copy Your One-Time Password

View your generated 6-digit TOTP code in the output field. It automatically refreshes every 30 seconds. Click 'Copy Code' button to copy to clipboard, then paste it into your login verification prompt within the time remaining (shown in the countdown timer).

Complete Two-Factor Authentication

Enter the copied TOTP code in your service's 2FA verification field and click 'Verify' or 'Confirm'. The code will be valid for approximately 30 seconds before a new one generates. If the code expires, refresh and get a new one.

Frequently Asked Questions

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