🔐Strong Password Checker

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Check password strength, entropy, and common weaknesses. Get actionable suggestions to improve it.

🔑Password
StrengthVery weak
Entropy: 0.0 bits • Est. crack time: <1s
✅Checks
Length: 0
12+ recommended
Lowercase letters
Uppercase letters
Numbers
Symbols
No repeats (aaa, !!!)
No sequences (abc, 123)
No keyboard runs (qwerty)
No common words
💡Suggestions
  • Too short; use at least 12 characters.
  • Only one character type; add upper/lower, digits, and symbols.
  • Use a longer password (16+ for critical accounts).
  • Mix upper/lowercase, digits, and symbols.
Tip: Use a password manager to store long, unique passwords. Avoid reusing passwords across sites.
How this tool works
1
Enter your password
Type the password you want to check in the input field. Use the &quot;Show&quot; button to reveal it if needed.
2
View strength analysis
See the password strength rating (Very weak to Very strong), entropy in bits, and estimated crack time.
3
Review checks
Check which criteria your password meets: length, character types, and common pattern avoidance.
4
Read suggestions
Get actionable recommendations to improve your password security, such as increasing length or adding variety.
5
Improve and recheck
Make adjustments based on the suggestions and check again to see improved strength ratings.