Password Strength Checker

Entropy, crack time and weaknesses (checked in your browser).

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How it works

Enter your input.
Get the result instantly.
Copy or download it.

Runs in your browser. Your data never leaves your device.

Frequently asked questions

Is Password Strength Checker free?

Yes. You can use Password Strength Checker for free without installing anything. A free account gives you higher daily limits, and paid plans remove most limits.

Is it safe to use?

Yes. Password Strength Checker runs completely in your browser, so your data never leaves your device.

Do I need to install any software?

No. Password Strength Checker works in any modern web browser on Windows, Mac, Linux, Android and iPhone.

Does it work on mobile phones?

Yes. The page adapts to any screen size, so you can use it on your phone or tablet just like on a computer.

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