Password Strength Checker
Type a password (or a made-up one) and see an estimate of how resistant it is to automated guessing, plus what would make it stronger. Nothing is sent anywhere.
Runs entirely in your browser — nothing is transmitted or stored. Estimates are educational; real-world cracking speed varies. Best of all, use a password manager and a unique password per site.
How this is calculated
We estimate entropy from length and character variety and translate it into a rough time-to-crack at a typical offline guessing rate. It's an educational estimate, not a guarantee. Your input never leaves your device.
Results are estimates for educational purposes and depend on the numbers you enter. They are not financial, tax, or investment advice. Nothing you type is transmitted or stored.
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