◨ SECURITY Updated July 25, 2026

Password Strength Checker

Measure password entropy and estimated crack time.

Password to test
—Rating
—Entropy
—Length
—Offline crack time
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How it works

Entropy is calculated from the size of the character pool and the length of the password, then compared against an offline attack rate of ten billion guesses per second. Common patterns — dictionary words, repeats, keyboard runs — are penalised.

Related tools

◧Password Generator◪Hash Generator◫Uuid Generator

Frequently asked questions

Is my password sent anywhere?

No. The check runs entirely in your browser and nothing is transmitted, logged, or stored.

What makes a strong password?

Length beats complexity. A four-word passphrase of 20+ characters is far stronger than an eight-character string of symbols.

Comments

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