TOTP / OTP Generator

Generate TOTP and HOTP one-time passwords compatible with Google Authenticator and Authy.

Runs entirely in your browser — nothing is uploaded or stored on any server.

About TOTP / OTP Generator

Updated Mar 2025

Generate Time-based One-Time Passwords (TOTP per RFC 6238) and HMAC-based One-Time Passwords (HOTP per RFC 4226) using the Web Crypto API. Enter a Base32 secret and get live updating 6 or 8 digit codes with a countdown timer. Compatible with Google Authenticator, Authy, and all standard TOTP apps. Generate random secrets instantly.

Frequently Asked Questions

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