Password strength
Estimate password strength with an entropy score, character set analysis, and an offline crack-time estimate. Nothing is sent to a server.
Strength
EmptyEntropy
0 bitsLength
0Offline crack time
< 1 second// About this tool
Check whether a password is strong enough before using it. The tool scores length, character variety, and repetition, then estimates how long an offline attack might take.
// How to use it
- Type or paste the password.
- Review the strength score and entropy.
- Adjust length and character variety as needed.
// Frequently asked questions
Is the password sent anywhere?
No. Analysis happens locally in the browser and the value is not stored.
Is the crack-time estimate exact?
No. It is a rough estimate based on entropy and a fixed guessing rate, not a real attack.