Password Strength Checker

Check password strength in real-time with weakness analysis and improvement tips.

Enter Password

Character Variety Analysis:

Lowercase

Uppercase

Numbers

Symbols

Password Statistics:

Length: 0 characters

Entropy: 0 bits

Tips for strong passwords:

Use at least 12-16 characters
Include uppercase and lowercase letters
Add numbers and special characters
Avoid common words and patterns
Don't use personal information
Use unique passwords for each account

How to Check a Password's Real Strength for Free

1. Type or paste a password — analysis runs instantly in your browser as you type.

2. Read the strength label and estimated crack time, then check Suggestions for the single change that helps most.

3. Use 'Check Breach Database' to confirm the password hasn't already leaked in a known data breach.

4. Prefer a fresh password over reusing a leaked or previously-checked one, even after fixing the issues found here.

Your Password Never Leaves Your Browser

Strength analysis runs entirely on your device. The only network request this tool ever makes is the breach check, and it uses k-anonymity (via the HaveIBeenPwned API) so only the first 5 characters of a hash of your password are sent — never the password itself.