TOTP Generator Online - 6-Digit Authenticator Code
Generate a six-digit time-based one-time password from a Base32 secret locally in your browser.
About this tool
The generator implements a 30-second TOTP counter with HMAC-SHA-1 and six output digits, matching common authenticator defaults.
How to use
- Enter the value in the format described by the tool.
- Run the conversion or calculation in your browser.
- Review and copy the generated result.
Features
- Base32 secret decoding.
- Standard 30-second time step.
- Six-digit HMAC-SHA-1 code.
Common use cases
- Test a TOTP integration.
- Verify a Base32 provisioning secret.
- Generate a temporary code when local browser use is appropriate.
Common issues and tips
- A device clock mismatch can produce rejected codes.
- Pasting a live secret into any environment requires careful trust and screen-sharing hygiene.
Privacy
Processing runs locally in your browser. Input is not uploaded to Tools12345.
Frequently asked questions
How often does the code change?
Every 30 seconds.
Which algorithm is used?
HMAC-SHA-1 with six digits.
Is the secret uploaded?
No, it stays in the browser.