Check how strong your password really is — instantly, and entirely in your browser. This tool estimates how long it would take an attacker to crack it, flags common patterns, and can generate a strong one for you if you need it.
A strong password only helps if it's different everywhere. A password manager generates and remembers unique ones for every site, and a VPN keeps your traffic private on top of that.
See our security & privacy picks →How is my password strength calculated?
We estimate entropy (how random and unpredictable it is) based on length and character variety, then subtract points for predictable patterns like sequences (“abc”, “123”) and repeated characters. We also check it against a list of the most commonly used passwords in the world.
Is it safe to type my real password into this tool?
Yes. Everything happens locally in your browser using JavaScript — your password is never sent to our server or anywhere else, and we don’t log, store, or see it. You can safely test a password you actually use.
What makes a password easy to crack?
Short length, common words, keyboard patterns (like “qwerty”), and predictable substitutions (like “P@ssw0rd”) are the biggest weaknesses — these are the first things attackers try.
Should I use a different password for every account?
Yes. Reusing passwords means one leaked account can compromise all your others. A password manager makes this practical by generating and remembering a unique password for every site.
How often should I change my passwords?
Only when there’s a real reason to — like a data breach. Frequent forced changes often push people toward weaker, more predictable passwords. Focus on strength and uniqueness instead of a change schedule.