TOTP 2FA Authenticator Code Generator (RFC 6238)
Generate live 6-digit Time-Based One-Time Password (TOTP) 2FA codes and otpauth:// QR codes from Base32 secret keys for automated QA login testing. 100% free, instant execution, dark mode supported, and zero registration required on TempoMailUSA.
Testing signups or email deliverability?
Generate disposable email inboxes or use public temporary phone numbers to test OTP verification and account flows.
Overview & Usage
TOTP 2FA Authenticator Code Generator (RFC 6238) is a free online tool designed for totp 2fa code generator from secret key. Generate live 6-digit Time-Based One-Time Password (TOTP) 2FA codes and otpauth:// QR codes from Base32 secret keys for automated QA login testing. It runs quickly and privately in your browser with instant copy and export options.
This tool runs with complete privacy in your browser. All inputs, calculations, and DNS verifications follow current web standards.
Technical Specifications
| Tool Name | TOTP 2FA Authenticator Code Generator (RFC 6238) |
|---|---|
| Category | Cybersecurity & Crypto |
| Processing | Client-Side (Browser) |
| Privacy | Private — No inputs are saved or tracked |
| Output Formats | Clipboard Copy, Text, and JSON |
How to Use TOTP 2FA Authenticator Code Generator (RFC 6238)
Enter your domain, IP address, text, or code into the input field above, or click one of the quick sample presets.
The tool processes your input locally in your browser in milliseconds without sending your data to any server.
Inspect the generated code, formatted results, and diagnostic details in the results panel.
Click the Copy button to copy the output directly to your clipboard, or download it to your computer.