See how fast a hacker could break your password — and learn why it matters.

!!
2,200 cyberattacks happen every single day That's one attack every 39 seconds. Weak passwords are the #1 entry point for hackers worldwide.
%
81% of data breaches are caused by stolen or weak passwords Verizon's Data Breach Report found that the vast majority of hacking-related breaches use compromised credentials.
#
The password "123456" has appeared in over 42 million breaches Despite years of warnings, simple passwords remain staggeringly common. "password" and "qwerty" aren't far behind.
+
Adding one character can multiply crack time by 95x Every extra character exponentially increases the number of combinations an attacker must try. Length beats complexity.
● 100% Private
Your password never leaves your browser. Zero data is collected or transmitted.

Test Your Password

Type below to see how long a brute-force attack would take at 10 billion guesses/sec.

Enter a password to see results

-
Length
-
Pool
-
Entropy
-
Combos
Quick tips for a stronger password
  • Use 14+ characters minimum
  • Mix upper, lower, digits & symbols
  • Never reuse across accounts
  • Avoid dictionary words & names
  • Use a password manager
  • Enable two-factor authentication
Learn more
How Strong Is My Password? Password Strength Tips What Makes a Good Password? Brute Force Calculator

Free Password Strength Checker & Security Tester

Our password strength checker lets you test any password and instantly see how long it would take to crack using a brute-force attack at 10 billion guesses per second. Whether you're creating a new account or auditing your existing passwords, this tool gives you a clear picture of your password security.

How Does the Password Strength Test Work?

When you type a password into our checker, it calculates the total number of possible combinations based on the character types you've used (lowercase, uppercase, digits, and symbols) and the length of your password. It then estimates how long a brute-force attack would take at modern hardware speeds. The result is displayed as a crack time — from "Instantly" for weak passwords to "trillions of years" for strong ones.

Is This Password Checker Safe to Use?

Yes — your password never leaves your browser. All calculations happen locally in JavaScript. We don't store, transmit, or log anything. There are no analytics trackers, no cookies, and no server-side processing. This is the safest way to check how strong your password is.

What Makes a Strong Password?

A strong password is long (14+ characters), uses a mix of character types, avoids dictionary words and common patterns, and is unique to each account. Read our full guide on what makes a good password or check out our password strength tips for practical advice.