TOTP Generator & Authenticator

Secret Key (Base32)

Base32-encoded secret from your service, e.g. JBSWY3DPEHPK3PXP

Invalid Base32 secret. Use only characters A-Z and 2-7.

Account Name

Issuer / Service Name

Verify a Code

MyApp

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30s

OTP Auth URI (click to copy)

What is TOTP?

TOTP (Time-based One-Time Password) is the algorithm behind authenticator apps like Google Authenticator, Authy, and Microsoft Authenticator. It generates a 6-digit code that changes every 30 seconds, derived from a shared Base32 secret key and the current time. Even if someone intercepts a TOTP code, it expires in seconds and cannot be reused. TOTP is defined in RFC 6238 and is the standard algorithm for two-factor authentication (2FA) on websites and apps. The secret key is typically shared by scanning a QR code when setting up 2FA — this tool lets you generate and verify TOTP codes directly from the Base32 secret.

How to Use the TOTP Generator

Enter your Base32 TOTP secret key in the input field.
The current 6-digit TOTP code is displayed and updates automatically every 30 seconds.
A countdown timer shows how many seconds remain before the code changes.
Scan the QR code with any authenticator app to add the account to your phone.
Use the generated codes to test 2FA integration in your application.