Password Strength Checker
To check password strength, type a password: ClickZM estimates entropy, detects common passwords, keyboard patterns, sequences, years and leetspeak, and estimates offline crack time. An optional breach check uses Have I Been Pwned's k-anonymity API, so the password itself is never sent.
- Free
- No signup
- Runs in your browser
How to use Password Strength Checker
- 1Type or paste your input into the Password Strength Checker.
- 2Choose any options you need.
- 3See the result update instantly.
- 4Copy the result or download it.
Password Strength Checker: questions people ask
Is it safe to type my real password here?
The analysis runs in your browser. The breach check sends only the first 5 characters of the password's SHA-1 hash, the k-anonymity method HIBP designed for this.
What makes a password strong?
Length and randomness. A random 16-character password or a five-word passphrase beats a short complex one like P@ssw0rd!.
Is my data uploaded when I use the Password Strength Checker?
No. The Password Strength Checker runs entirely in your web browser, so your text and numbers stay on your device and work even on a slow connection.
Does the Password Strength Checker work on iPhone, Android and Mac?
Yes. The Password Strength Checker runs in any modern browser (Safari, Chrome, Edge or Firefox) on iPhone, iPad, Android phones, Mac, Windows and Chromebook. There is no app to install.
Is the Password Strength Checker free?
Yes. The Password Strength Checker is free with no signup, no watermark and no daily limit.