2FA Code Generator

Welcome to the ZeoTools 2FA Code Generator, a free TOTP generator that turns a stored two-factor secret into the same six-digit code your authenticator app would show. Paste the base32 key you saved when you enabled two-factor authentication, press Submit, and the code appears together with the exact time it expires. It follows the TOTP standard described in RFC 6238, the same one behind Google Authenticator, Authy, and Microsoft Authenticator, and it lives in the same free toolkit as our Web Inspector — no registration, no credit card, no API limits.

Why Use Our 2FA Code Generator? Losing a phone should never mean losing an account. This authenticator code online reads your secret and rebuilds the current code in a single submit, so you can sign in from a desktop while the device is being replaced. Codes are issued as 6 digits on a 30-second step using SHA-1, the combination Cloudflare, Google, GitHub, and AWS all hand out. Paste a full otpauth:// URI instead and the digits, time step, algorithm, and issuer are read straight from it, so unusual setups still work without a single dropdown. Pair it with our Redirect Checker whenever a sign-in link takes an unexpected route.

What Makes Us Different: Most online 2FA generators post your secret to their server, where it travels through proxies and access logs you can never audit. Ours never leaves the tab. Every code is computed locally with the browser's Web Crypto API, so your 2FA secret key is never transmitted to ZeoTools, never written to a log, and never stored. Close the tab and it is gone. Generate as many codes as you need, on as many secrets as you need, completely free and unlimited.

Key Features: Instant 6-digit TOTP code generation • Full otpauth:// URI support with automatic issuer detection • SHA-1, SHA-256, and SHA-512 resolved automatically • 30-second and 60-second time steps • Exact expiry time shown with every code • One-click copy straight to your clipboard • Computed entirely in your browser with zero data transmission • Backed by our complete free tool directory • Free forever with no registration required.