Password Strength Meter
Test your password security against brute-force attacks in real-time.
Advanced Analysis
How to Check Password Strength?
Enter Password
Type the password you want to test into the secure input field above. It works entirely offline.
View Analysis
Instantly see the entropy bits, complexity level, and the estimated time a hacker would need to crack it.
Improve Security
Add symbols, numbers, or increase the length until the meter reaches the "Very Strong" status.
Why Use Our Strength Meter?
100% Private & Offline
Your password is never sent to the internet. All calculations are done locally in your browser using JavaScript.
Real-Time Crack Time
Get a realistic estimate of how long modern GPU clusters would take to brute-force your password.
Advanced Entropy Math
Calculates the true mathematical unpredictability of your password based on character pool size and length.
Frequently Asked Questions
Is it safe to test my real password here?
Yes, this tool is 100% client-side. The analysis happens inside your browser using local JavaScript. We never send your password to any server or store it anywhere.
What are Entropy Bits in security?
Entropy Bits measure the mathematical randomness and unpredictability of a password. The higher the number, the more difficult it is for a hacker to crack your password using a dictionary or brute-force attack. 80+ bits is considered highly secure.
How accurate is the Crack Time?
The estimated crack time assumes the attacker is using modern, high-speed GPU hardware capable of billions of guesses per second. It serves as a mathematical baseline to show how weak or strong a password is.