TOTP/2FA Authenticator
Generate two-factor authentication codes instantly
Add New Account
💡 Used to distinguish between multiple accounts (e.g., when you have 2FA for Google, GitHub, and Apple)
The secret key provided by the service (usually 16-32 characters)
Your Accounts ()
digits
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About TOTP/2FA Authenticator
This free online TOTP authenticator generates time-based one-time passwords (TOTP) compatible with Google Authenticator, Authy, Microsoft Authenticator, and other 2FA apps. All computations happen entirely in your browser — your secrets never leave your device.
How to use
- Enable 2FA on the service you want to secure
- Choose "Manual Entry" or scan the QR code
- For manual entry: copy the secret key and paste it here
- For QR code: point your camera at the QR code
- Your TOTP codes will appear below and auto-refresh
Security features
- Client-side generation only — zero server transmission
- Supports SHA-1, SHA-256, and SHA-512 algorithms
- Compatible with 6-digit and 8-digit codes
- Works with 30-second and 60-second periods
Privacy First: Secrets remain only in this browser tab session and are cleared when the tab session ends. Do not use production recovery secrets on a shared device. TOTP calculations happen locally using JavaScript.