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Password Strength Checker

Password Strength Checker

Analyze your password strength and get security recommendations

Password Input

Password Security Tips

✅ Do:

  • • Use 12+ characters when possible
  • • Mix uppercase, lowercase, numbers, and symbols
  • • Use unique passwords for each account
  • • Consider using a password manager
  • • Use passphrases with random words

❌ Don't:

  • • Use personal information (names, dates)
  • • Use common passwords or dictionary words
  • • Reuse passwords across multiple sites
  • • Use simple patterns (123456, qwerty)
  • • Share passwords or write them down unsecurely

About this tool

Analyze password security with real-time strength scoring and recommendations Password Strength Checker runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.

What this tool does not do

  • Password Strength Checker is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.

How do I use this tool?

  1. How do I use Password Strength Checker?

    Open Password Strength Checker, enter or paste your input, and copy the result. The page works without an account.

Related guides

Measuring Password Strength with Entropy and Checking Known Breaches

How password entropy is calculated in bits, zxcvbn dictionary matching, and k-Anonymity privacy in Have I Been Pwned breach checks.

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