Frequently Asked Questions
Are these calculators free?
Yes, all calculators are completely free with no signup or payment required.
How accurate are the results?
Our calculators use clinically established formulas and reference ranges. Results are for educational purposes — always consult a healthcare provider for medical decisions.
Do you store my health data?
No. All calculations happen in your browser. We never see or store your inputs.
Do I need to create an account?
No account needed. Open any calculator and use it immediately.
Can I use these results with my doctor?
Yes, these calculators can help you prepare for medical appointments. However, always have your healthcare provider interpret results in the context of your full medical history.
Are the calculators mobile-friendly?
Yes, all calculators are fully responsive and work on smartphones and tablets.