Password Strength Checker
Test how strong a password is.
Checked locally — never sent anywhere.
About Password Strength Checker
Password Strength Checker is a free online tool that lets you test how strong a password is in seconds — no signup, no software to install, and no watermarks. Everything runs entirely in your browser, so your files and data never leave your device and nothing is uploaded to a server. Whether you need to password strength checker once or every day, this Security tool works instantly on desktop and mobile and is completely free to use. It's a fast, free alternative for anyone searching for a password checker.
How to use this tool
- 1Type or paste a password.
- 2See its strength score and estimated crack time.
- 3Follow the tips to strengthen it.
Frequently asked questions
Is it safe to type my password here?
Yes. The check runs entirely in your browser and the password is never sent, stored, or logged.
How is strength estimated?
It scores length and character variety and estimates the entropy to approximate brute-force crack time.