Calculate the entropy (true strength) of any password. See how many bits of security your password provides.
True mathematical strength
Estimated time to crack
Weak to Very Strong
Password strength meters are often misleading. Entropy gives you the real mathematical measure of password security.
Yes, completely free. We never store passwords.
60+ bits is strong. 80+ bits is very strong. 100+ bits is excellent.
Yes, over HTTPS, and we never store it.