How Fast Can a Hacker Crack Your Password Pattern?
Don't enter your real password. Enter a fake one with the same length and style
(like Summer2025! or Password123) to see if your habits are safe.
Paranoid? Good. This runs 100% in your browser. Turn off your Wi-Fi and it still works.
Weak or reused?
A weak password that is also reused is how one breach becomes ten. If it guards more than one account, check the signs you may already be compromised.
Want to see how long that password would survive a real brute-force attack? Check our 2026 crack-time calculator.
How This Tool Protects Your Privacy
100% Client-Side Analysis
Pattern analysis happens entirely in your browser using zxcvbn, the same library used by Dropbox. Your test password never leaves your device.
k-Anonymity Breach Check
To check breach databases, we send only the first 5 characters of a one-way hash. This makes it mathematically impossible to determine your password from what we send. Learn more →
Works Offline
The ultimate proof: disconnect your internet and the strength analysis still works. Only the breach database check requires a connection.
View the Code
Don't trust us? Good. Inspect the source code yourself. Right-click → View Source to see exactly what this tool does.
You checked one password. What about the rest?
Most people have 100+ accounts with weak or reused passwords. Get your full security score in 2 minutes.
Check Your Overall Security Score →