OTP Generator
Generate one-time passwords (TOTP/2FA codes) online for free. Compatible with Google Authenticator.
Compatible with Google Authenticator, Authy, and all TOTP 2FA apps. Your secret key never leaves your browser.
このツールについて
Generate time-based one-time passwords (TOTP) compatible with Google Authenticator and other 2FA apps. Enter your secret key to generate the current 6-digit code.
使い方
Enter Secret
Paste your Base32 TOTP secret key.
View Code
See the current 6-digit OTP code and time remaining.
Copy
Copy the code to use for 2FA login.
活用シーン
2FA Testing
Test and verify TOTP codes for your authentication setup.
よくある質問
Is my secret key safe?
Yes. Everything runs locally in your browser. Your secret key is never sent to any server.