Password Strength Checker
Checked locally in your browser — the password is never sent anywhere.
Everything is calculated in your browser — nothing is sent anywhere.
Very weak
Estimated entropy: ~0 bits
Frequently asked questions
Is the password sent to a server?⌄
No. The entire check runs locally in your browser with JavaScript — the password never leaves your device and is never sent to us or anyone else.
What is password entropy?⌄
A measure of a password's unpredictability in bits — the higher it is, the more combinations a brute-force attack would need to try. A password with 60+ bits of entropy is considered strong.
How do I make a password stronger?⌄
Use at least 12-16 characters, mix uppercase and lowercase letters, digits, and symbols, and avoid dictionary words or sequences like 123456 or qwerty. A random password generator plus a password manager is the strongest option.