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Password Strength Checker

Test your password strength live — score, crack-time estimate and concrete tips to make it stronger.

Runs 100% in your browser — your input never leaves this page. How we handle your data →
Runs 100% in your browser — your input never leaves this page.

Your password never leaves your browser — it is analyzed locally and never sent, stored, or logged.

Type a password above to see a live score, crack-time estimate, and concrete tips.

Your results will appear here.

Fill in the input above and run the tool to get started.

Honest limits

Crack-time is a rough estimate from password entropy, not a guarantee. A password this tool calls "strong" can still fall to phishing, reuse, or breaches — use a password manager and 2FA.

How to use the Password Strength Checker

  1. Type (or paste) a password into the box above — nothing is sent anywhere, it is analyzed in your browser.
  2. Read the live score (0–100), the color-coded meter, and the strength label.
  3. Check the crack-time estimate — a rough figure from the password's entropy, not a guarantee.
  4. Follow the personalized tips, then use Password Generator to create a strong one.

Examples

Example

Type P@ssw0rd → it scores low: it is on the common-password list (leet variants are detected), so it earns the −40 common-password penalty. Change it to a 16-character random mix like Tr7$kL9#qW2!mX5 → Strong, with a crack-time estimate measured in centuries.

What this tool doesn't do

  • The crack-time is a rough estimate from entropy math — it knows nothing about reuse, breaches, phishing, or keyloggers.
  • A "Strong" label is not a security certification — a strong password reused across sites is still one breach away from trouble.
  • No breach checking: this tool cannot tell you whether a password was leaked before.
  • Use a password manager and turn on two-factor authentication (2FA) wherever it matters.

Frequently asked questions

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