Security Tools
Password Strength Checker
FreeNo SignupPrivate — runs in your browser
Check how strong your password is online for free. Get a detailed security score, estimated crack time, and improvement suggestions. No signup required.
What is Password Strength Checker?
Think your password is strong enough? Our free Password Strength Checker analyzes your password's entropy, pattern usage, and estimated crack time in real time. Get specific feedback on what makes it weak and how to improve it — all computed locally without ever sending your password anywhere.
How to Use Password Strength Checker
- 1Type your password into the field
- 2See the strength score update in real time
- 3Review specific weakness warnings
- 4Follow suggestions to improve strength
Key Features & Benefits
Real-time strength scoring
Estimated time to crack
Specific weakness identification
Actionable improvement suggestions
Frequently Asked Questions
Is my password sent to a server?
No. Password checking happens entirely in your browser. Your password never leaves your device.
What makes a password strong?
Length, mixed character types (upper, lower, numbers, symbols), and avoiding dictionary words or common patterns.
How is crack time estimated?
We estimate time based on entropy calculation and common attack speeds for offline brute-force attacks.