The check runs in your browser. The password is not sent anywhere and is not saved.
Enter a passwordEntropy measures how many guesses it takes on average to hit the password — each bit doubles that number. Below 40 bits a password falls in hours, between 40 and 60 it lasts days, between 60 and 80 — years, and above 80 it is beyond the reach of today's hardware. The estimate assumes an offline attack at about 100 billion guesses per second, so it is deliberately pessimistic.
Checks
What to fix
- Tips will appear here.
Don't have a suitable password? Generate a new one
How to use the tool
Enter or paste your password
The field is hidden by default; use the button next to it to reveal the password and check what you pasted.
Look at the rating
The bar shows the strength, and next to it are the bits of entropy and how long cracking would take in an offline attack.
Fix the weak spots
The checks on the right tell you exactly what's missing — length, a character group, repeats, keyboard sequences or a known password.
Frequently asked questions
No. The entire analysis is JavaScript running on your device. There's no server request and nothing is stored in the browser — once you close the page, no trace of the password remains.
The length and the character groups used give the number of possible combinations. From that we subtract the patterns an attacker tries first: repeats, keyboard sequences, years and known passwords. What remains is expressed in bits of entropy.
Usually because of a pattern. “Parola2024!” has a capital letter, digits and a symbol, but it's a word, a year and an exclamation mark — exactly what cracking programs try in the first few seconds.
No. Such a check requires sending the password (or part of its hash) to an external service, and this tool deliberately makes no outside requests. If the password is among the best-known ones, you'll see a warning.
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