📖 What is this tool?
Password Strength Checker analyzes your password against multiple security criteria including length, character diversity, and common password patterns. Get an instant strength score from "Very Weak" to "Very Strong" with specific improvement tips.
💡 Example
Output
✓ Strong (Score: 8/9)
Length: 11 chars
Uppercase: ✓, Lowercase: ✓, Numbers: ✓, Symbols: ✓
🛠️ Common Use Cases
- Evaluate password strength before using it
- Teach password security best practices
- Test password policy compliance
- Learn what makes passwords strong
- Audit existing passwords for weaknesses
❓ Frequently Asked Questions
What makes a password strong? ▾
A strong password is at least 12 characters long and uses a mix of uppercase letters, lowercase letters, numbers and special characters. Avoid dictionary words, names and predictable patterns.
How long should my password be? ▾
At least 12 characters for regular accounts, 16+ for critical accounts like email and banking. Length is the single most important factor — a random 20-character password beats a complex 8-character one.
Should I use a password manager? ▾
Yes — password managers generate and store strong unique passwords for every site. You only need to remember one master password. Popular options include Bitwarden (free), 1Password and Dashlane.
🔒
Your data stays private. All processing happens entirely in your browser. Nothing is ever sent to our servers. You can use this tool offline after the page loads.