Strong Password Checker
Test your password strength and get instant feedback on how to improve it.
Your password is checked locally in your browser and is never sent anywhere.
How to Use Strong Password Checker
- Open the Strong Password Checker tool above and enter your input in the fields.
- The tool processes your input instantly in your browser.
- Copy, download or share your result with a single click.
Strong Password Checker — Frequently Asked Questions
How is password strength measured?
Strength is scored from 0 to 4 based on length and the use of uppercase, lowercase, numbers and symbols.
Is my password sent anywhere?
Never. The check runs entirely in your browser with zero network requests.
What makes a password strong?
At least 12 characters mixing upper and lowercase letters, numbers and symbols, with no common words.