Password Strength Calculator

Evaluate the security of your passwords and get personalized recommendations for making them stronger.

Why Use This Calculator?

A strong password is your first line of defense against unauthorized access. This calculator helps you:

• Assess password strength instantly
• Identify potential vulnerabilities
• Get specific suggestions for improvement
• Learn best practices for password creation

How It Works

The calculator analyzes your password based on multiple security factors:

• Length
• Character variety (uppercase, lowercase, numbers, symbols)
• Common patterns and substitutions
• Known vulnerable combinations
• Dictionary word usage

Understanding Results

The calculator provides:

• Overall strength score (0-100)
• Estimated time to crack
• Specific strengths and weaknesses
• Personalized improvement suggestions

Password Security Tips

Do’s

• Use at least 12 characters
• Mix uppercase and lowercase letters
• Include numbers and special characters
• Use unique passwords for each account
• Consider using a password manager

Don’ts

• Don’t use personal information
• Avoid common word patterns
• Don’t use keyboard patterns (e.g., qwerty)
• Never reuse passwords
• Avoid obvious substitutions (e.g., @ for a)

Common Password Mistakes

1. Using Personal Information

   • Birth dates
   • Names of family members
   • Pet names
   • Phone numbers

2. Simple Patterns

   • Sequential numbers
   • Keyboard patterns
   • Repeated characters
   • Common phrases

3. Weak Modifications

   • Adding a single number at the end
   • Simple character substitutions
   • Using only one capital letter
   • Minimal special characters

Frequently Asked Questions

Is my password stored or transmitted?

No, all analysis is performed locally in your browser. Your password is never stored or transmitted.

What makes a password “strong”?

A strong password is long, complex, unique, and avoids common patterns or personal information.

How often should I change my password?

Current security guidelines suggest changing passwords only when there’s a reason (e.g., after a breach) rather than on a fixed schedule.

Should I use different passwords for everything?

Yes, using unique passwords for each account prevents a single breach from compromising multiple accounts.