Password Strength Checker
Check how strong your password is, its entropy and estimated crack time — checked locally, never sent anywhere. Free.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
0 characters
Result
How to use Password Strength Checker
- 1Paste or type your text in the left box (or open a file).
- 2The converted result appears instantly on the right.
- 3Copy it with one click or download it as a file.
Questions
Is Password Strength Checker free?
Yes. Password Strength Checker is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Password Strength Checker work on my phone?
Yes. Password Strength Checker works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.