Free TOTP Generator Online - Two-Factor Authentication Tool
Generate time-based one-time passwords (TOTP) for two-factor authentication. Free online TOTP generator with QR code support. Secure, browser-based, and compatible with all major authenticator apps.
TOTP QR Code Generator for 2FA Authentication
Create QR codes for TOTP authentication setup. Compatible with Google Authenticator, Microsoft Authenticator, Authy, and other 2FA apps. Generate secure OTP codes instantly in your browser.
Secure Two-Factor Authentication Code Generator
Professional TOTP generator for developers and security professionals. Generate time-based OTP codes, create QR codes, and manage multiple authentication secrets. 100% client-side processing.
Frequently Asked Questions
What is TOTP and how does it work?
TOTP (Time-based One-Time Password) is a two-factor authentication method that generates temporary codes based on the current time and a secret key. Each code is valid for a short period (typically 30 seconds), providing enhanced security for your accounts.
Is this TOTP generator secure?
Yes! All TOTP generation happens entirely in your browser. Your secret keys and codes never leave your device, ensuring complete privacy and security. No data is sent to any server.
Which authenticator apps are compatible?
This tool generates standard TOTP codes compatible with all major authenticator apps including Google Authenticator, Microsoft Authenticator, Authy, 1Password, and Bitwarden.
Can I use this for existing 2FA setups?
Yes! If you have an existing TOTP secret key, simply paste it into the Secret Key field. The tool will generate the same codes as your authenticator app.
What should I do with the QR code?
Scan the QR code with your authenticator app to add the account. This is the most convenient way to transfer the secret key to your mobile device. Keep the secret key secure as it can be used to generate codes.
What are the algorithm and period settings?
The algorithm (SHA1/SHA256/SHA512) and period (15/30/60 seconds) settings allow advanced configuration. Most services use SHA1 with 30-second periods. Only change these if specifically required by your service.
Can I export my TOTP configuration?
Yes! Use the 'Export Configuration' button in the Advanced Settings section to download your TOTP settings as a JSON file. This is useful for backing up your configuration.
Is there a limit to how many codes I can generate?
No limits! You can generate unlimited TOTP codes. The tool will automatically update the code every second, displaying the current valid code and time remaining.