Utilzivo

Password Strength Checker

Test how strong your password really is. Type a password to get an instant 0-4 strength score with a color-coded bar, an estimated crack time, and concrete tips to make it stronger. Your password never leaves your browser – it is analyzed locally and never sent anywhere.

Strength: –

    How to Use the Password Strength Checker

    1. Type the password you want to test. Nothing is transmitted – the check runs entirely on your device.
    2. Watch the strength bar fill and change color from red (very weak) to green (very strong) as you type.
    3. Read the crack-time estimate: how long an offline brute-force attack would need at 10 billion guesses per second.
    4. Follow the tips list – each tip targets a specific weakness in your password.
    5. Toggle Show password if you want to see what you typed.

    Practical example

    You type “sunshine2024” and get a Weak score with a crack time of minutes – plus tips to add uppercase letters and symbols. Change it to “Sunshine-2024-Coffee!” and the score jumps to Very strong with a crack time measured in centuries. Same memorable words, vastly harder to crack.

    Key features and benefits

    • Instant scoring: 0-4 scale based on length, character variety, and unpredictability.
    • Common-password detection: instantly flags the 20 most abused passwords like “password” and “123456”.
    • Crack-time estimate: translates math into plain language – seconds, years, or centuries.
    • Actionable tips: every suggestion maps to a missing ingredient.
    • Fully private: your password is never uploaded, logged, or stored.

    Limitations

    The score measures resistance to brute-force guessing, not overall account security – phishing and database leaks bypass even strong passwords, so enable two-factor authentication wherever it matters. Crack times assume an offline attack at 10 billion guesses per second; online login forms are far slower (and usually lock out attackers). Never test a password you already use somewhere important on any website, including this one – generate fresh ones with a password manager instead.

    Frequently asked questions

    • Is it safe to type my real password here? The check runs entirely in your browser and nothing is transmitted, but as a rule never test a password you actively use – test a candidate, then decide.
    • What score should I aim for? Strong (3) is a solid minimum; Very strong (4) with 12+ characters is ideal for important accounts.
    • Why does length matter more than symbols? Each extra character multiplies the guesses an attacker needs. A long phrase of plain words usually beats a short, complex jumble – ideally use both.