Password Strength Checker
Score a password on length and character variety, with an entropy estimate and plain advice.
Quick answer: enter your details below and click Check Strength — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
P
Converters & Utilities
Enter your details below.
How to use
- Type the password you want to check.
- Read the rating, length, and entropy estimate.
- Follow the single piece of advice shown.
- Check the new version again before you use it.
About this tool
A strong password is usually long and mixed, and this checker measures both qualities without ever saving or sending what you type. It counts length and the character classes present, estimates entropy from the size of the pool those classes imply, and turns the result into a simple rating. The advice stays practical: add length first, then mix in another character class if one is missing.
Frequently asked questions
Is my password sent anywhere?
No. The check runs locally in the page, and nothing you type is stored or transmitted by this tool.
Does a high score guarantee safety?
No. A strong password still needs to be unique to one account, and reused passwords stay risky however complex they look.