💪Password Strength Checker

Check how strong your password is and get improvement suggestions.

Enter Password to Test

Enter a password above to analyze its strength.

About Password Strength Checker

Password Strength Checker analyzes your password against length, character variety, common patterns, and dictionary words to give you a real-time strength score and specific improvement suggestions. It runs entirely in your browser — your password is never transmitted or logged anywhere.

How to Use Password Strength Checker

1
Type your password
Enter the password you want to evaluate in the input field. A toggle lets you show or hide the characters as you type.
2
Review your strength score
See your password rated on a scale from very weak to very strong, with a visual indicator showing the score.
3
Follow the improvement suggestions
Read the specific suggestions provided (e.g., 'Add special characters' or 'Make it longer') and update your password accordingly.

Common Use Cases

Evaluating existing passwords before using them on sensitive accounts
Verifying that a newly created password meets security best practices
Learning what makes passwords stronger through interactive feedback
Auditing passwords across multiple accounts to identify weak ones to replace

Frequently Asked Questions

How is password strength measured?

The checker evaluates password length, use of uppercase and lowercase letters, numbers, and special characters, and checks against known weak passwords and common substitution patterns to produce a strength score from very weak to very strong.

Is my password sent anywhere when I check it?

Absolutely not — all analysis happens locally in your browser using JavaScript. Your password never leaves your device and is not stored, logged, or transmitted to any server.

What makes a password truly strong?

A strong password is at least 16 characters long, uses a random mix of uppercase and lowercase letters, numbers, and symbols, avoids dictionary words and personal information, and is unique to each account.

How to Create Strong Passwords: A Science-Backed Guide

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