toolvio.

Password strength checker

See how strong a password is and how long it would take to crack.

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Length
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Character sets
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Entropy
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Time to crack

    Runs locally in your browser. Nothing is uploaded.

    How to use

    1. Type or paste a password.
    2. The score, entropy and crack time update instantly.
    3. Follow the hints to make it stronger.

    Questions

    Is my password sent anywhere?

    No. The check runs entirely in your browser; nothing leaves the page.