Password Strength Checker
Evaluates your password on a 5-level scale by checking length, character variety and repeated patterns, and shows the estimated brute-force cracking time. Your password is never sent or stored — it is checked only inside your browser.
- 12+ characters
- Has lowercase
- Has uppercase
- Has numbers
- Has symbols
- No repeats/sequences
How to use
- Type the password to check.
- Review the strength level, estimated cracking time and checklist.
- Fix the missing items to make the password stronger.
Frequently asked questions
Is my password sent anywhere?
No. All checking happens inside your browser; the input is never sent to a server or stored.
How is the cracking time estimated?
It converts the password's entropy into time against an attacker guessing 10 billion times per second. Actual safety also depends on the site's security.
What makes a strong password?
12+ characters mixing upper/lowercase, numbers and symbols, with no sequences or repeated patterns.