Password Strength Checker
See how strong a password really is — with a live strength meter, entropy in bits, an estimated crack time and clear checks you can act on. Your password is analysed entirely in your browser and is never sent anywhere.
- Length
- 0
- Entropy
- 0 bits
- Char pool
- 0
🔒 This runs 100% in your browser. Nothing you type is logged, stored or transmitted.
Checks
- ○ At least 12 characters
- ○ Contains a lowercase letter
- ○ Contains an uppercase letter
- ○ Contains a number
- ○ Contains a symbol
- ○ Not a common / breached password
- ○ No obvious repeats or sequences
Want a strong one generated for you?
Use the Password Generator to create a long, random password with one click.
About this password strength checker
Strength is estimated from the character pool and length, then adjusted for weak patterns.
Shows roughly how long an offline attacker (~10 billion guesses/sec) would need.
Flags common passwords, single-character spam, repeats and keyboard / number sequences.
A live checklist and suggestions show exactly what to improve.
Works instantly in any modern browser — no signup, no extensions.
Your password never leaves the page — there are no network requests at all.