Password Strength Meter
Type any password to see a live 0 to 100 score, a Weak to Very Strong rating, entropy in bits, an honest crack time estimate and concrete tips to make it stronger.
Strength score
0/100
Rating
—
Entropy
—
Length
0
Crack time (online)
—
Crack time (offline)
—
Character variety
Weaknesses found
- Type a password to start the analysis.
How to make it stronger
- Tips will appear here after you type a password.
Your password never leaves this page: everything is analysed in your browser. For extra safety, test with a password similar to your real one rather than the real one.
How to use
- Type the password you want to test in the box above.
- Watch the live score from 0 to 100 and the Weak to Very Strong rating.
- Read the weakness list to see exactly what is dragging the score down.
- Follow the tips to fix the problems and retype until the rating improves.
Frequently asked questions
It scores your password from 0 to 100 using entropy in bits minus penalties for weak patterns, and shows a rating of Weak, Fair, Strong or Very Strong.
Entropy is randomness measured in bits. More bits means the password is harder to guess. Twelve random characters from all four character types give about 78 bits.
No. The password is analysed locally in your browser and never sent anywhere. For extra safety, test with a similar password rather than your real one.
Length alone is not enough. Common words, keyboard walks like qwerty, repeated characters and number sequences are easy for attackers to guess, so they lower the score.
Use at least 12 characters with lowercase, uppercase, digits and symbols, avoid common words and patterns, and keep every password unique per site.