Analyze password strength with entropy estimates, crack-time projections, and improvement tips. This Password Strength Checker is part of our free developer tools collection on freetoolstouse. It runs entirely in your browser, so your files and inputs stay on your device unless the tool explicitly performs a network check (for example DNS or SSL lookups). There is no signup, no watermark, and no usage cap. Use it whenever you need a fast, accurate result without installing software.
Analyze password strength with entropy estimates, crack-time projections, and improvement tips.
Strength estimates assume random character selection. Real-world attacks also use dictionary lists and leaked passwords, so treat results as guidance rather than guarantees.
