Password Strength Checker

Type a password to see an estimate of its strength. Everything runs in your browser and nothing is sent anywhere.

Password

Strength

—

Entropy—

Length—

Est. time to crack—

Runs in your browser. Nothing is sent or saved.

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<iframe src="https://calculatorspoint.net/embed/password-strength-checker/" style="width:100%;max-width:640px;height:560px;border:1px solid #e3e8ef;border-radius:12px;" loading="lazy" title="Password Strength Checker"></iframe>

How it works

Entropy ≈ length × log2(character set size)

Frequently Asked Questions

Is my password sent anywhere?

No. The check runs entirely in your browser using JavaScript. Nothing is uploaded or stored.

How is crack time estimated?

It assumes a fast offline attacker trying about 10 billion guesses per second. Real-world times vary widely, so treat it as a rough guide.