Password Strength Checker

How to use the password strength checker

Simply type or paste your password into the “Enter Password” field. As soon as you start typing, the tool automatically analyzes it and displays the result under “Strength”, no button click required. The result shows one of four levels — “Weak”, “Fair”, “Good”, or “Strong” — with a color-coded bar that shifts from red to green as your password gets more secure.

Below the strength bar you will also see “Length” (the number of characters in your password) and “Score” (a rating out of 100). If your password is missing important elements, the “Suggestions” box lists exactly what to add, such as using at least 16 characters, adding uppercase letters, lowercase letters, numbers, or special characters.

When to use it and why it matters

You should check your password strength whenever you create a new account, update an existing password, or want to audit old passwords used for email, banking, or social media. Weak passwords are one of the leading causes of brute-force attacks and account takeovers after data breaches. Testing your password before using it helps you catch common weaknesses early, such as passwords that are too short, made up of only lowercase letters, or missing special characters, so you can fix them before a security incident happens.

Tips for creating a strong password

To reach the “Strong” level, aim for at least 16 characters and mix uppercase letters, lowercase letters, numbers, and special characters like !, @, #, or $. Avoid predictable personal details such as your birthday, name, or phone number. A great approach is to build a passphrase from several unrelated words combined with numbers and symbols — easy for you to remember but hard for attackers to guess. Also, use a unique password for every important account instead of reusing the same one across multiple services.

Security and free to use

All scoring happens entirely client-side using JavaScript in your own browser — the password you enter is never transmitted to or stored on any server. That means you can safely test real passwords you already use without worrying about exposure. The tool is completely free, with no usage limits and no account registration required.

Frequently asked questions

Is my password saved anywhere when I use this tool? No. The check happens entirely in your browser, and your password is never sent to or stored on any server.

What score counts as a strong password? A score of 80/100 or higher (the “Strong” level) is considered strong, which usually means a password of 16+ characters with uppercase, lowercase, numbers, and special characters.

Why is length more important than complexity alone? The longer a password is, the more combinations an attacker has to try, which makes brute-force attacks far more time-consuming, even if the password lacks special characters.

Can I use this tool to check multiple passwords? Yes, you can test as many passwords as you like — the tool is completely free with no limit on usage.