Password Strength Checker
Test how strong a password is and how long it would take to crack, privately in your browser.
Your password is checked entirely in your browser. It is never sent, saved or logged.
Estimated time to crack
What we found
Continue your work
- Password Generator — Create a strong random password.
- Passphrase Generator — Create an easy-to-remember passphrase.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Password Strength Checker
Test how strong a password is and how long it would take to crack, privately in your browser.
- 1 Type a password. It never leaves your device.
- 2 Read the strength rating, entropy and estimated crack times for four attack speeds.
- 3 Fix the issues listed, such as common words, sequences or a short length.
Example and practical tips
P@ssw0rd2024 is rated weak: the look-alike symbols do not hide “password”, and the year is easy to guess. A passphrase of four random words is both stronger and easier to remember.
Frequently asked questions
Is my password sent anywhere?
No. The check runs entirely in your browser; nothing is sent, stored or logged.
What makes a password strong?
Length and unpredictability. Use 12 or more characters, avoid real words and personal details, and use a password manager to create and remember unique passwords.
Report an issue
Something broken or not quite right? Tell us and we will look into it.