Free Online Password Strength Meter
Check password complexity, entropy calculations, and estimated time-to-crack values locally.
Test Your Password Strength and Security
A strong password is your first line of defense against online hacks. Weak passwords can be cracked in seconds using brute force dictionaries. Our free online password strength meter measures password security in real-time.
Our checker analyzes complexity based on multiple parameters:
- Character Mix: Evaluates inclusion of uppercase, lowercase, numbers, and symbols.
- Entropy Score: Computes password entropy bits to check randomness.
- Estimated Hack Time: Projects how long a standard computer would take to guess the password.
Key Benefits & Features
Visually shows password strength ranging from Very Weak (Red) to Strong (Green).
Displays estimates of brute force hacking time.
Operations run entirely inside your browser. No passwords are sent over the network.
How to Use the Password Strength Meter Step-by-Step
This utility runs entirely inside your browser using client-side JavaScript. We prioritize your security: none of your inputted text is logged or stored.
- 1
Type your password into the test input field.
- 2
Review the complexity metrics, character distribution, and crack time calculations.
- 3
Adjust character length or add symbols to improve your security score.
Practical Examples
hello12
Frequently Asked Questions (FAQ)
How is password strength calculated?▼
We evaluate password length, character variety, and patterns. High-entropy random passwords result in the highest strength scores.
Is my password safe when testing here?▼
Yes, no network requests are sent. The analysis logic executes entirely inside browser JS, meaning your password never leaves your machine.
How do I make a weak password strong?▼
Increase the length to at least 12-16 characters and insert a mix of uppercase letters, numbers, and special symbols (e.g. !, $, #).
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