TOTP (Time-based One-Time Password) is a 2FA method used by authenticator apps. Codes refresh every fixed interval like 30 seconds.

Does this tool store my secret?

No. This page runs locally in your browser and does not store secrets in cookies or local storage, and does not submit secrets to a server.

Which algorithms and options are supported?

SHA1, SHA256, SHA512; 6/7/8 digits; and 15/30/60 second periods are supported.

2FA Code Generator (Browser Only)

Generate TOTP 2FA codes locally in your browser. No storage, no URL secrets, and no server submission. Supports SHA1/SHA256/SHA512, 6/7/8 digits, and 15/30/60 second periods.

Browser-only • No storage

Secret Input

Waiting

Base32 Secret Spaces allowed

Digits6–8

Periodseconds

AlgorithmHMAC

Safety tip: avoid using this on devices with untrusted extensions or remote access. This page does not store secrets, but your device environment still matters.

Live OTP

Refresh in --s

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Digits: 6 Period: 30s Algo: SHA1

How this TOTP generator works

TOTP (Time-based One-Time Password) is used by authenticator apps to generate 2FA codes. A new code is created every fixed time interval (commonly 30 seconds). This tool calculates the code locally using your secret and the current time, without sending your secret to any server.

Supported options

Algorithms: SHA1, SHA256, SHA512
Digits: 6, 7, 8
Periods: 15, 30, 60 seconds

Common setup tips

Remove spaces if your secret looks copied incorrectly, but spaces are allowed here.
If codes do not match, check your device time and the selected period (usually 30s).
Most authenticator apps use 6 digits and SHA1 by default.

Popular search keywords

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FAQ

What is TOTP?

TOTP is a time-based one-time password used for two-factor authentication (2FA). Codes refresh on a timer.

Does this website store my secret?

No. This page does not store secrets in cookies or local storage, and it does not submit secrets to a server.

Can I use this page offline?

Yes. You can save this page and open it locally for additional privacy.

Privacy & safety

This tool runs locally in your browser. However, no website can guarantee full safety if your device has malware, unsafe browser extensions, remote access, or screen recording tools. For best results, use a trusted device and a clean browser profile.