Generate TOTP 2FA codes — supports Google Authenticator and more
Enter a secret key to generate 2FA codes
Free online 2FA code generator. Generate TOTP two-factor authentication codes compatible with Google Authenticator, Authy, Microsoft Authenticator, and all TOTP-based apps. Enter your secret key to get live 6-digit codes that refresh every 30 seconds. Also generate new secret keys and OTP Auth URLs. 100% client-side — your secret key never leaves your browser.
Two-factor authentication (2FA) adds a second layer of security to your accounts. Even if someone knows your password, they can't log in without the time-based code from your authenticator app. TOTP (Time-based One-Time Password) is the most common 2FA method, used by Google, Facebook, GitHub, and thousands of other services. This tool generates TOTP codes from your secret key — useful when you've lost access to your authenticator app or need to generate codes on a different device.
TOTP (Time-based One-Time Password) generates a 6-digit code by combining your secret key with the current time (in 30-second intervals) using HMAC-SHA1. The same algorithm runs on your authenticator app and the server, so they generate the same code at the same time. The code changes every 30 seconds, making it impossible to reuse. This tool implements RFC 6238 — the same standard used by Google Authenticator.
2FA Code Generator Online Free is useful when you need to complete a focused task quickly without installing desktop software, creating another account, or switching into a heavy workflow. It works well for quick checks, conversions, previews, cleanups, generation tasks, and everyday operations where speed and consistency matter. Free online 2FA code generator. Generate TOTP two-factor authentication codes compatible with Google Authenticator, Authy, Microsoft Authenticator, and all TOTP-based apps. Enter your secret key to get live 6-digit codes that refresh every 30 seconds. Also generate new secret keys and OTP Auth URLs. 100% client-side — your secret key never leaves your browser.
Start with a small sample so you understand how 2FA Code Generator Online Free handles your input, then apply it to the full task. Review the important fields, copy or export the result, and test it in the place where you plan to use it. This keeps the tool fast while still giving you a practical quality-control step before production use.
Before using the output, check formatting, special characters, line breaks, file names, URLs, units, numbers, and mobile display when relevant. If the result affects SEO, code, design, business documents, analytics, or customer-facing material, compare it against your original requirement and fix any context-specific detail before publishing.
Manual work is fine for one-off tasks, but repeated manual formatting or checking is slow and easy to make inconsistent. 2FA Code Generator Online Free helps standardize the process, reduce copy-paste mistakes, and produce a cleaner starting point so you can spend more time on review, judgment, and improvement.
Yes, this tool uses the same TOTP algorithm (RFC 6238) as Google Authenticator, Authy, and other authenticator apps.
Yes, all processing happens in your browser. Your secret key is never sent to any server.
TOTP codes are time-based, so your device clock must be accurate. If the code fails, check that your system time is synced correctly. Also ensure you're using the correct secret key.
A TOTP secret key is a Base32-encoded string provided by the service when you set up 2FA. It's usually shown as a QR code or a text string you can copy manually.
Yes. If you have the secret key saved, you can use this tool to generate codes whenever you don't have access to your phone. Always store your secret keys securely.
Yes. 2FA Code Generator Online Free is designed as a free browser-based utility for quick personal, learning, and professional workflows.
No. You can use 2FA Code Generator Online Free directly in a modern browser such as Chrome, Edge, Safari, or Firefox.
Yes. The page is responsive and can be used on phones and tablets, although desktop is usually more comfortable for long input or repeated copy operations.
Use clean input, test with a small sample first, review the output carefully, and adjust any details that depend on your final use case.
In most cases, yes. You can use the generated or processed output in personal and commercial projects, but legal, financial, medical, or security-sensitive work should still be reviewed by a qualified person.
The tool is built for quick browser workflows. You should still avoid entering highly sensitive data unless the specific tool clearly states how the data is handled.
Many tools include copy or download actions. If a dedicated export is not available, you can usually copy the visible result manually.
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