Password Strength Checker & Generator
Check how strong your password is, or generate a secure one instantly.
Enter a password above
- At least 8 characters
- Contains an uppercase letter
- Contains a lowercase letter
- Contains a number
- Contains a special symbol
How to Use the Password Strength Checker & Generator
- To check a password: type or paste it into the "Strength Checker" tab.
- Watch the strength bar and checklist update instantly as you type.
- To generate a password: switch to the "Password Generator" tab.
- Choose your desired length and character types, then click "Generate Password".
- Click "Copy" to copy the generated password to your clipboard.
Why Use This Tool?
Weak or reused passwords are one of the most common causes of account breaches. This free tool helps you instantly evaluate password strength based on length, character variety, and common security rules, or generate a strong, random password using your browser's secure random number generator. Everything runs locally in your browser — nothing is ever sent to a server or stored.
Frequently Asked Questions
Is my password sent to any server?
No. Both the strength checker and the generator run entirely in your browser using JavaScript. Your password never leaves your device.
How is the generated password created?
The generator uses your browser's built-in cryptographically secure random number generator (Web Crypto API), which is more reliable than basic random functions used by many simple generators.
What makes a password strong?
A strong password is typically at least 8-12 characters long and combines uppercase letters, lowercase letters, numbers, and symbols, while avoiding common words or predictable patterns.
Is this tool free to use?
Yes, completely free with no sign-up required.