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Check the strength of a password instantly and see which characteristics can make it harder to guess.
Analyze your password
Analysis happens locally in your browser. Avoid entering passwords for accounts you are actively using if you do not trust the website running this tool.
Password strength
Enter a password to check its strength.
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Things to consider
Enter a password to see security observations.
A strength checker cannot prove that a password is safe or impossible to crack. It only evaluates characteristics and patterns available to this page. Never reuse important passwords, and consider using a password manager.
Enter a password into the password field and the checker will immediately analyze its length, character variety and several common patterns. The result is displayed as a strength level, progress bar and detailed checklist.
Type a password into the checker.
Check the strength score and security observations.
Use the failed checks to make the password stronger.
The checker looks at characteristics such as password length, uppercase and lowercase letters, numbers and special characters. It also checks for several obvious patterns such as common password words, repeated characters and simple sequential numbers. These checks provide a quick indication of password quality, but they are not a guarantee of security.
Longer passwords generally provide a much larger number of possible combinations.
Different character types can increase the number of possible combinations.
Common words and predictable sequences can make passwords easier to guess.
A strong password should be difficult for other people and automated guessing systems to predict. Length and uniqueness are especially important. Instead of making small changes to a familiar password, use a genuinely different password for each account.
Prefer longer passwords or passphrases.
Use a different password for every important account.
Avoid common words, repeated characters and simple sequences.
A password manager can create and store unique passwords.
No. A password strength checker is an estimate based on characteristics and patterns it can detect. It cannot know every attack method, leaked-password database or attacker strategy.
This implementation analyzes the password in your browser and does not send it to a server. However, you should still avoid entering a real, sensitive password into any website unless you trust the implementation and environment.
Length is an important factor because it can greatly increase the number of possible combinations. A long, unique password or passphrase is generally preferable to a short password with a few added symbols.
Character variety can increase the number of possible combinations, but simply adding predictable substitutions is not enough. Password length, uniqueness and unpredictability are also important.
Symbols alone do not necessarily make a password strong. A short password containing predictable words or common patterns can still be relatively easy to guess.
A reputable password manager can make it easier to use long, unique passwords for different accounts without having to memorize each one.
Wondering how long your password should be, whether symbols help, or how password managers work? Ask your question.