2FA.ac
Free 2FA code generator & 14 security tools
2FA.ac launched on May 28, 2026 with 1 votes.
What it does
Generate 2FA codes instantly, check passwords, decode JWT, lookup DNS & IP. 15+ free cybersecurity tools. No signup required.
Free 2FA tool to generate TOTP codes online instantly from your secret key. Works like Google Authenticator — 100% in your browser, no signup, no data stored.
Enter your secret key to instantly generate a TOTP code — works exactly like Google Authenticator, right in your browser. 16 free cybersecurity tools — passwords, JWT, DNS, WebRTC leak test and more. No signup required. Three steps, under ten seconds — no app install, no account. During 2FA setup on any site, click “can’t scan QR code?” / “enter key manually” and copy the Base32 key (e.g. JBSWY3DPEHPK3PXP). Paste the secret key into the generator at the top of this page. Everything is computed locally in your browser. Click Generate Code, copy the code, and paste it into the website asking for it. A fresh code appears every 30 seconds. A 2FA code generator (also called a TOTP generator or…from 2fa.ac
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