Password Strength Checker - Free, Instant, In Your Browser
Type a password to see its estimated entropy in bits and a strength rating.
How to use Password Strength Checker
- 1Paste your text or data into the input box above.
- 2Password Strength Checker runs instantly, right in your browser.
- 3Copy the result or use it directly.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
How does this work?
Using a standard, well-established method - see the description above for details.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.