TOTP Generator - Two-Factor Authentication Code Generator
Generate Time-based One-Time Passwords (TOTP) for two-factor authentication. Compatible with Google Authenticator, Authy, Microsoft Authenticator, and other 2FA apps. All processing happens locally in your browser.
Real-Time Generation
Generates 6-digit codes that automatically refresh every 30 seconds.
QR Code Support
Generate QR codes to easily add accounts to authenticator apps.
100% Secure
All code generation happens locally. Your secret keys never leave your device.
Secret Key
Enter your 2FA secret key or generate a new one for testing
About TOTP
- •TOTP (Time-based One-Time Password) generates 6-digit codes that change every 30 seconds
- •Compatible with Google Authenticator, Authy, Microsoft Authenticator, and other 2FA apps
- •Keep your secret key secure - anyone with it can generate your 2FA codes
- •This tool works offline and never sends your secret to any server
What is TOTP?
TOTP (Time-based One-Time Password) is an algorithm that generates a one-time password using the current time as a source of uniqueness. It's the most common form of two-factor authentication (2FA) used by services like Google, Facebook, GitHub, and thousands of other websites.
TOTP codes are typically 6 digits long and change every 30 seconds. They're generated using a shared secret key and the current time, ensuring that both the server and your authenticator app can independently generate the same code at the same time.
How to Use This TOTP Generator
- Enter Your Secret Key: Paste the TOTP secret key provided by the service you're setting up 2FA for, or generate a new one for testing.
- View the Code: The 6-digit TOTP code will be displayed and automatically refresh every 30 seconds.
- Copy the Code: Click the "Copy Code" button to copy the current code to your clipboard.
- Scan QR Code: Use the generated QR code to add the account to Google Authenticator, Authy, or other 2FA apps.
Compatible Authenticator Apps
Google Authenticator
Free app by Google for Android and iOS. Simple and reliable TOTP generator.
Authy
Multi-device support with cloud backup. Available on mobile and desktop.
Microsoft Authenticator
Microsoft's 2FA app with additional features like password autofill.
1Password
Password manager with built-in TOTP support for premium users.
Why Use Two-Factor Authentication?
Enhanced Security
Even if someone steals your password, they can't access your account without the TOTP code from your authenticator app.
Protection Against Phishing
TOTP codes change every 30 seconds, making them useless to attackers who might intercept them.
Widely Supported
Most major online services support TOTP-based 2FA, making it a universal security solution.
TOTP Best Practices
- Backup Your Secret Keys: Store your TOTP secret keys securely in case you lose your phone.
- Use Multiple Devices: Apps like Authy allow multi-device sync for redundancy.
- Save Recovery Codes: Most services provide backup codes when enabling 2FA - store them safely.
- Never Share Secret Keys: Your TOTP secret key is as sensitive as your password.
- Enable 2FA Everywhere: Use TOTP on all accounts that support it, especially email and financial accounts.
Frequently Asked Questions
Is this TOTP generator safe to use?
Yes. All TOTP code generation happens locally in your browser using JavaScript. Your secret keys are never sent to any server.
What if I lose my phone with my authenticator app?
This is why it's crucial to save your TOTP secret keys and recovery codes. You can use the secret key to set up 2FA on a new device, or use recovery codes to regain access.
Can I use TOTP offline?
Yes! TOTP works offline because it only requires the current time and your secret key. No internet connection is needed to generate codes.
How long is a TOTP code valid?
TOTP codes are typically valid for 30 seconds. Most services accept codes from the current and previous time window for a total of about 60 seconds.