Password Strength Checker - Analyze and Improve Passwords
Time to crack (estimates)
Estimates assume brute-force search over the full space implied by the password's character set and length. Real-world cracking can be faster if the password contains common words or patterns.
Quick stats
Findings
- Repeated groups: 0
- Sequential runs: 0
No risks detected.
- Use at least 12 characters
- Add an uppercase letter (A-Z)
- Add a lowercase letter (a-z)
- Add a number (0-9)
- Add a symbol (!@#$%…)
What Makes a Strong Password?
Strong passwords are long, random, and diverse. Use a mix of uppercase and lowercase letters, numbers, and symbols. Avoid meaningful words, names, dates, or predictable patterns.
Length is the best lever for security. Aim for at least 12 characters and prefer 16+ for important accounts. A password manager helps you generate and store unique passwords for each site.
Recognize Weak Patterns
Avoid sequences like “abc” or “123”, obvious substitutions like “p@ssw0rd”, and repeated characters such as “aaa” or “1111”. These patterns are quickly guessed by attackers.
Don’t reuse passwords. If one site is breached, reused credentials can compromise other accounts.
Checklist
- • 12+ characters (preferably 16+)
- • Uppercase and lowercase letters
- • Numbers and symbols
- • No common words or patterns
Bad Examples
- • password, qwerty, 123456
- • name + birth year
- • keyboard sequences
- • repeated characters
Good Habits
- • Use a password manager
- • Unique password per site
- • Enable 2FA where possible
- • Rotate passwords if exposed