TOTP Online Generator
Generate TOTP / 2FA codes online — Google Authenticator, Authy and 1Password compatible. Runs locally in your browser; the secret never leaves this page.
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The secret lives only in page memory and is lost on refresh. Compatible with Google Authenticator / RFC 6238.
Frequently asked questions
- Is this TOTP online generator safe?
- Yes. Codes are computed entirely in your browser with WebCrypto HMAC-SHA1. Your secret never leaves the device and is not stored anywhere.
- Does it work with Google Authenticator / Authy / 1Password?
- Any standard TOTP secret works: Base32, 30-second period, 6 or 8 digits. That includes secrets exported from Google Authenticator, Authy, 1Password and most 2FA backup codes.
- Why is my code rejected by the website?
- Almost always clock drift. TOTP is time-based — make sure your device clock is accurate (enable automatic time), and check the secret has no spaces or missing characters.
- What does TOTP stand for?
- Time-based One-Time Password (RFC 6238). The code is derived from the shared secret plus the current 30-second time window, so it changes automatically.
How to use
Enter a base32 secret to generate 6/8-digit codes (RFC 6238, compatible with Google Authenticator). The secret lives only in page memory and is lost on refresh — never paste production secrets on untrusted devices.