Free Password Strength Checker Online — Test Password Strength Privately
Password Strength Checker
Free password strength checker
Score a candidate password locally in your browser. Nothing is sent to an API for analysis.
Use this for learning and policy checks. Prefer a password manager for real account secrets.
Very weak
Length
0
Entropy (approx.)
0 bits
Score
0 / 4
Checklist
- ○ At least 8 characters
- ○ At least 12 characters
- ○ Includes lowercase letters
- ○ Includes uppercase letters
- ○ Includes numbers
- ○ Includes symbols
- ✓ Not a common password
Tips
- Aim for 12+ characters. Length beats clever substitutions.
- Mix uppercase and lowercase letters.
- Add a number somewhere unexpected.
- Add a symbol such as ! @ # or -.
Free Password Strength Checker That Stays in Your Browser
Use this free password strength checker to estimate strength, length, and entropy tips locally. This online password strength checker is built for cybersecurity students and website owners who want clear guidance without uploading secrets.
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How to choose a stronger password today
Create a long unique password in a manager, enable MFA, and never reuse the same secret across sites. Use this checker to teach length and variety — not to paste production passwords into chat logs.
What I tell clients about passwords
Most breaches I investigate still start with reused or short passwords. A simple password strength checker helps non-technical owners see why “Winter2024!” is not enough for email or admin panels.