Password Strength Checker
Type any password and see a live strength score, entropy and estimated crack time — plus specific suggestions to make it dramatically stronger.
Password Strength Checker
How It Works
Three steps to a stronger password.
Type a password
Enter the password you want to analyze.
Read the score
See the live strength label, entropy in bits and estimated crack time.
Apply suggestions
Use the character checklist and targeted tips to strengthen it.
FAQ
Common questions about password strength.
How is password strength measured?
It estimates entropy from length and the character pool, then maps that to crack-time and a strength label.
Is my password sent anywhere?
No. Analysis runs entirely in your browser — the password never leaves your device.
What is entropy?
Entropy (in bits) quantifies how many guesses an attacker would need. Higher is stronger.
How are common passwords handled?
A built-in list of the most common passwords is checked and flagged as compromised instantly.
What makes a strong password?
12+ characters mixing upper, lower, digits and symbols, avoiding words, repeats and sequences.
Does this tool store passwords?
No. It is a purely local calculation with no storage or network calls.