Free Password Tools

Password Strength Checker

Check password strength online free with length, character variety and entropy estimates. The password stays in your browser.

Client-side

Strength result

Strength

Empty

Score

0/100

Entropy

0 bits

Suggestions

Use at least 12 characters.
Add lowercase letters.
Add uppercase letters.
Add numbers.
Add symbols.

Password Tools

About Password Strength Checker

Check password strength online free with length, character variety and entropy estimates. The password stays in your browser. The work happens in your browser, so your input stays on your device while you prepare the result.

Testing whether a new password has enough length and variety.

Learning what makes a password easier or harder to guess.

Practical notes

Do not paste a real sensitive password into any website you do not trust.
A password manager can generate and store stronger unique passwords.

Related tools

Password Generator

Common questions

Does this tool upload my data?

No. The tool runs in your browser and keeps the selected content on your device.

Is this tool free?

Yes. It is free to use in the browser and does not require an account.