Password Strength Checker
Check how strong your password is and get tips to make it more secure. Test your password against common attacks and improve your online security.
How to Create a Strong Password
A strong password is your first line of defense against cyber threats. This password strength checker analyzes your password against multiple criteria to give you a comprehensive security assessment.
Here are the key factors that make a password strong:
- Length matters: A password should be at least 12 characters long. Each additional character exponentially increases the number of possible combinations.
- Use variety: Include a mix of uppercase and lowercase letters, numbers, and special characters (!@#$%^&*).
- Avoid common patterns: Don't use dictionary words, names, dates, or keyboard patterns (qwerty, 12345, etc.).
- Use passphrases: Consider using a random phrase with spaces or underscores. These are easier to remember but hard to crack.
Why Use This Password Strength Checker?
- Real-time analysis: Get instant feedback as you type your password.
- Comprehensive criteria: Checks length, character variety, common patterns, and more.
- Privacy-first: Everything runs in your browser — your password never leaves your device.
- Actionable tips: Get specific recommendations to improve your password security.
- Crack time estimate: See how long it would take an attacker to crack your password using brute force.
Common Password Mistakes to Avoid
- Using personal information: Names, birthdays, pet names, or phone numbers are easy to guess.
- Using the same password everywhere: If one account gets breached, all your accounts are at risk.
- Short passwords: Anything under 8 characters can be cracked in seconds.
- Dictionary words: Simple words are vulnerable to dictionary attacks.
- Keyboard patterns: qwerty, 123456, asdfgh are among the most common passwords.
How Accurate Is This Checker?
This password strength checker uses industry-standard criteria and algorithms. It checks against a list of the 10,000 most common passwords and evaluates entropy (randomness) to estimate crack time. While no password checker can guarantee absolute security, this tool provides a solid assessment of your password's strength relative to common attack methods.
Frequently Asked Questions
A strong password is at least 12 characters long, includes a mix of uppercase and lowercase letters, numbers, and special characters, and does not contain common words, names, or predictable patterns. This checker evaluates all these criteria.
The checker analyzes your password against multiple criteria: length, use of uppercase and lowercase letters, numbers, special characters, and common patterns. It also estimates how long it would take for an attacker to crack your password using brute force methods.
No. Your password is processed entirely in your browser. It is never sent to any server or stored anywhere. Your privacy is fully protected.
For optimal security, use a password that is at least 12-16 characters long. Longer passwords are significantly harder to crack. This checker recommends a minimum of 12 characters.
Yes. Adding special characters (!@#$%^&* etc.) greatly increases the complexity of your password and makes it much harder for attackers to guess or crack.
A passphrase is a sequence of random words (e.g., "correct horse battery staple"). Passphrases are easier to remember but very hard to crack because of their length and randomness. This is one of the most secure types of passwords.