TOTP Generator
Enter the Base32 secret from your 2FA app (Google Authenticator, Authy...)
Options
Current TOTP token
How It Works
TOTP (Time-based One-Time Password) is the standard algorithm used by authenticator apps like Google Authenticator, Microsoft Authenticator, and Authy. This tool implements the TOTP algorithm to generate codes from your Base32-encoded secret key.
Simply input your Base32 secret key into the tool, and it will immediately compute the current valid TOTP code based on the current time. The countdown timer shows you exactly when the code will expire, allowing you to refresh before it becomes invalid. Each new 30-second time window generates a fresh, unique code.
All cryptographic operations and code generation happen entirely in your browser using client-side JavaScript. Your secret key never leaves your device, ensuring maximum security and privacy.
Common Use Cases
- Developer Testing: Verify 2FA integration in applications without installing authenticator apps
- System Administration: Manage and test TOTP codes for multiple accounts quickly
- Account Recovery: Generate codes when your primary authenticator is unavailable
- Security Audits: Test authentication systems and verify TOTP implementation correctness
- Key Backup Verification: Validate that stored Base32 secrets generate correct codes
High-speed NVMe Hosting from 49,000đ/month — free SSL