Security & Hashing
Password Strength Checker
Estimate password strength based on length, character variety and common-pattern detection. Runs 100% in-browser.
Very weak
Runs entirely in your browser — nothing is uploaded.
About the Password Strength Checker
Strength meters that reward one uppercase letter and one digit are misleading: Password1! satisfies most of them and appears in every cracking dictionary.
This checker scores length, character variety and recognisable patterns — keyboard walks, repeats, common substitutions — to give a more honest verdict.
How to use the Password Strength Checker
- Type or paste the password you want assessed.
- Read the score and the specific weaknesses listed.
- Address the biggest one first, which is usually insufficient length rather than missing symbols.
- Re-test until the result holds up, then store it in a password manager.