TOTP Generator
2FA codes from a Base32 secret.
Paste the Base32 secret from an authenticator setup URI (the secret= parameter) to generate the same codes your authenticator app does. Computed locally with Web Crypto — the secret never leaves this tab, so this page loads no third-party scripts at all.
About this tool
Generate time-based one-time passwords from an authenticator secret — 6 or 8 digits, SHA-1/256/512, live countdown — computed locally, never sent anywhere.
It runs completely in your browser — no input is sent anywhere, and this page loads no ads or third-party scripts, so it is safe to use with data you would not paste into a hosted service.