Check how strong your password is online for free. Get a detailed security score, estimated crack time, and improvement suggestions. No signup required.
First time here? Type your password into the field Your input is processed locally and disappears when you close the tab.
How strong is your password really? Our free Password Strength Checker analyzes any password in real time and rates it from Very Weak to Very Strong on a clear 0-to-4 scale, with a colored meter that updates instantly as you type.
Behind the score is zxcvbn, the same research-backed engine used by security teams, which looks past simple length rules to catch dictionary words, keyboard patterns, common substitutions, and predictable sequences. As a thorough password security test, it estimates realistic crack times for both a throttled online attack and an offline slow-hash attack, so you can see how long your password would actually hold up. This password meter also surfaces specific warnings and actionable suggestions, and a show/hide toggle lets you reveal what you typed — making it a fast "how strong is my password" audit for any new credential.
Your password is never sent anywhere — all scoring runs entirely in your browser, with nothing uploaded, logged, or stored. Use it alongside our Password Generator to create high-entropy passwords worth keeping, then protect the data they guard with the SHA-256 Hash Generator or MD5 Hash Generator.
Type your password into the field
See the strength score update in real time
Review specific weakness warnings
Follow suggestions to improve strength