Password Strength Checker
Your privacy is guaranteed. All password strength checks are performed entirely in your browser. We never send, store, or track your passwords.
100% Local & Private: Checks are performed securely inside your browser.
How long would it take to crack your password?
Most online password meters are basic and easily fooled. They simply check if you have an uppercase letter, a number, and a symbol. This leads to people creating passwords like Password123!—which fulfills all the basic requirements but can be cracked by a hacker in less than a second using a dictionary attack.
Our tool uses advanced algorithm technology to analyze the true entropy (randomness) of your password. It checks your input against massive databases of leaked passwords, common names, pop culture references, and keyboard patterns (like qwerty) to provide a highly realistic estimate of how long it would take a sophisticated computer to guess it.
The Core Pillars of Password Security
1. Length is King
Every additional character you add exponentially increases the time required to crack a password. Aim for at least 12-16 characters. A long passphrase (like correct-horse-battery-staple) is often better than a short complex one.
2. Uniqueness
Never reuse passwords. If you use the same strong password for your bank and a small forum, and the forum gets hacked, hackers now have the key to your bank account via "credential stuffing."
Frequently Asked Questions
Is it safe to type my real password here?+
Yes, it is completely safe. We prioritize your privacy and security. This tool runs 100% locally in your browser using client-side JavaScript. Your password is never sent to a server, never logged, and never stored. You can even turn off your internet connection before typing, and the tool will still work perfectly.
How does the tool calculate password strength?+
We use zxcvbn, an advanced open-source password strength estimator originally developed by Dropbox. It uses pattern matching and dictionaries of common passwords to recognize patterns that human hackers and automated cracking software look for.
What should I do if my password is weak?+
If your password is weak, you should change it immediately on the services where you use it. We highly recommend using a free Random Password Generator to create a cryptographically strong, unique password, and saving it in a reputable Password Manager (like Bitwarden, 1Password, or Apple Keychain).