Free Online Password Strength Checker

Password Strength Checker

Test the strength of your password based on length, complexity, entropy, and common patterns.

Enter your password

Password Strength: Very Weak

Score: 0/100

💡 Suggestions for improvement:

• Add more characters to increase length
• Include uppercase letters
• Include lowercase letters
• Add numbers
• Include special characters

🔍 What this tool does?

This Password Strength Checker evaluates how secure a password is by analyzing its length, character variety, complexity, and exposure to common patterns. It provides feedback and tips to improve weak passwords, helping users create safer credentials.

⭐ Key Features

Real-time strength scoring
Get instant feedback on password security

Visual strength bar
Easy-to-understand color-coded indicators

Security improvement suggestions
Actionable tips to enhance password strength

Copy/share results
Save and share strength analysis

Mobile-first responsive layout
Works perfectly on all devices

⚙️ How to use?

Enter a password in the field and click "Check Strength". The tool will show a score, strength category, and suggestions to improve your password. Use the copy button to save results, or reset to check another password.

💡 Creative Use Cases

For developers
Testing user password policies

Security-conscious users
Creating new secure logins

UX designers
Improving signup forms

IT teams
Performing internal audits

✨ Tool Description:

"Password Strength Checker is a free security tool that analyzes the strength of your password using real-time metrics like length, complexity, and character types. A must-have for safe online practices and secure authentication."

❓ FAQs

What makes a password strong?

A strong password typically has 12+ characters, includes uppercase and lowercase letters, numbers, and special characters. It should avoid common words, personal information, and predictable patterns.

How is the password strength score calculated?

The score is based on multiple factors: password length (40%), character variety (30%), complexity patterns (20%), and avoiding common words (10%). Each factor contributes to the final 0-100 score.

Is my password stored or transmitted anywhere?

No, your password is analyzed entirely in your browser using JavaScript. No data is sent to any server or stored anywhere. The analysis happens locally on your device.

What's the difference between the strength levels?

Very Weak (0-20): Easily cracked, needs major improvements. Weak (21-40): Vulnerable to attacks. Medium (41-60): Decent but could be stronger. Strong (61-80): Good security level. Very Strong (81-100): Excellent protection.

Should I use the same strong password everywhere?

No, never reuse passwords across different accounts. Even strong passwords should be unique for each service. Consider using a password manager to generate and store unique strong passwords.

How often should I change my passwords?

Change passwords immediately if there's a security breach, every 90 days for sensitive accounts, and annually for less critical accounts. Focus on using strong, unique passwords rather than frequent changes.