What makes a password strong?

Length is the biggest factor. A 16+ character password with mixed characters is extremely difficult to crack. Avoid dictionary words and keyboard patterns.

How is crack time calculated?

Based on entropy (randomness) of your password and typical attack speeds. Online attacks: 100 tries/second. Offline GPU attacks: 100 billion tries/second.

What is password entropy?

Entropy measures password unpredictability in bits. 40+ bits is fair, 60+ is strong, 80+ is very strong.

Password Strength Checker

Test password strength and get instant security feedback

UtilitiesFREEYour data never leaves your browser

Password Strength Checker is a free, browser-based tool that lets you test password strength and get instant security feedback — with zero signup, zero installation. Your data never leaves your browser. Part of 86+ free developer and business tools at wowhow.cloud, built and maintained by a team with 14+ years of hands-on development experience.