Free Password Strength Checker
Estimate how strong a password is.
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About the Password Strength Checker
Free password strength checker. Estimate a password's strength and crack time from its length and character variety, with tips to improve it — checked locally in your browser.
How it works
- 1
Type a password
Enter the password to test.
- 2
See strength
Get a rating and estimated crack time.
- 3
Improve it
Follow the suggestions to strengthen it.
Frequently asked questions
The check runs entirely in your browser — nothing is transmitted or stored. Still, avoid pasting a password you actively use anywhere you don't fully trust.
From length and the mix of character types, we estimate entropy and a rough offline crack time. Longer and more varied is stronger.