Generators & Calculators
Password Strength Checker
Estimate a password's entropy and strength. Nothing is sent anywhere.
❓ Frequently Asked Questions
What is the Password Strength Checker used for?
Estimate the entropy and strength of a password, entirely in your browser.
Is the Password Strength Checker free and private?
Yes — it's completely free and runs entirely in your browser. Whatever you enter stays on your device and is never uploaded to any server.
Do I need to install anything to use the Password Strength Checker?
No. It works in any modern web browser on desktop, tablet, or phone — no downloads, no browser extensions, and no account required.