Password Strength Checker
Check length and character variety without sending your password anywhere.
Check password strength safely
Your typed password stays in this tab and is never sent to analytics or a server.
Type a password locally to see a private strength estimate.
Understand a password strength estimate
A strength score is guidance, not a guarantee. A strong password should also be unique, randomly created, and protected with multi-factor authentication where available.
Use a unique result for each account and save it in a trusted password manager. For more practical guidance, read our password security tips or learn how to create a strong password.
Privacy by design
The tool runs in your browser using cryptographic randomness. Generated and typed values are not placed in URLs, cookies, browser storage, analytics, databases, or server logs.
Frequently asked questions
Does The Pass Key store the result?
No. Passwords, PINs, passphrases, and strength-checker input remain in the current browser tab.
Can I use this on a phone?
Yes. The controls are designed for current mobile, tablet, and desktop browsers.
What should I do after generating a password?
Copy it directly into the account form and save it in a trusted password manager. Avoid reusing it.