Password Strength Checker | Estimate Crack Time
Check password length, character variety, entropy estimate, common weaknesses, and approximate crack-time risk before choosing a safer password.
Security Hint:
- Start typing your password...
What the Password Strength Checker Reviews
The password strength checker estimates risk based on length, character variety, patterns, and entropy. It helps identify short, predictable, reused, or low-variety password ideas.
How to Read Crack-Time Estimates
Crack-time numbers are estimates, not guarantees. Real risk depends on leaks, password reuse, attacker resources, hashing method, rate limits, and whether the password appears in known patterns.
Do Not Test Real Secrets Publicly
Avoid pasting production passwords, private keys, recovery phrases, or confidential tokens into any online checker. Test similar sample passwords if you only need guidance.
About This Tool
Password Strength Checker analyses a password and rates its resistance to common attack methods including brute force, dictionary attacks, and pattern matching. It shows which factors make the password weak and suggests improvements.
When to Use It
Use this to evaluate an existing password before relying on it for an important account, to test whether a password policy produces genuinely strong results, or to teach users about what makes passwords predictable.
How to Use
- Type or paste your password into the input field.
- The strength meter updates in real time as you type.
- Read the feedback showing which criteria are met or missing.
- Adjust the password based on the suggestions until you reach a strong rating.
Frequently Asked Questions
What makes a password weak even if it is long?
Predictable patterns such as sequences (123456), keyboard walks (qwerty), repeated characters (aaabbb), or common words make passwords easy to crack regardless of length.
Does the checker send my password to a server?
No. The analysis runs entirely in your browser. Your password is not transmitted or stored anywhere.
What strength score should I aim for?
Aim for a Strong or Very Strong rating. Passwords rated Medium may still be cracked by modern hardware within days.