2FA Generator
Generate Time-based One-Time Passwords (TOTP) from a secret key. Compatible with Google Authenticator and Authy. Runs locally.
About this 2FA Generator tool
TOTP is the algorithm behind Google Authenticator (RFC 6238). CheckHub computes the current 6-digit code from your secret entirely in the browser — the secret never leaves your device.
How to use the 2FA Generator
- Step 1. Paste your TOTP secret.
- Step 2. Read the current 6-digit code with countdown.
Frequently asked questions
- Is my secret safe?
- Yes. The computation runs in JavaScript locally; CheckHub has no server-side knowledge of your secret.
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