About this calculator suite
Doctor With Data publishes free medical calculators that turn published formulas and scoring systems into tools anyone can use in seconds. The suite covers 26 specialities, from cardiology risk scores and kidney function estimates to weight-based drug dosing for children and mental health screening scales. Each speciality has its own page above with every tool listed, a plain-English guide to the field, and answers to common questions.
How the calculators are built
Every calculator starts from the original published source: the derivation study or guideline behind the formula. The calculation logic is implemented directly from that source and then tested against known worked examples before anything goes live. Each page shows the formula, the source it came from, and a visible review date.
Medically reviewed, not auto-generated
Dr. Taimoor Asghar, a physician and community medicine researcher, personally reviews every calculator for medical accuracy before publication. No tool goes live without his sign-off. If a formula is updated in the literature or an error is reported, the page is corrected and the review date is updated.
What these tools cannot do
These are educational tools, not medical advice. A score supports a conversation with a clinician; it never replaces one. Risk scores are built from specific study populations and may not apply to everyone. Always discuss results with a qualified clinician before making health decisions, and if a result suggests an emergency, seek urgent care rather than recalculating.
Your privacy
Every calculation happens in your browser on your own device. Nothing you type into a calculator is sent to our servers, stored, or shared. Analytics cookies, which help us understand how the calculators are used, are only set after you accept them in the privacy notice.
Frequently asked questions
Are these calculators free to use?
Yes. Every calculator in the suite is free, with no account and no paywall. They work in any modern browser on phones, tablets, and desktops.
Who checks that the calculators are correct?
Every calculator is medically reviewed by Dr. Taimoor Asghar, a physician and community medicine researcher, before it goes live. Each page shows its review date and the source of its formula.
Do my inputs leave my device?
No. Every calculation happens in your browser on your own device. Nothing you type is sent to our servers, stored, or shared with anyone.
Can I use these calculators to diagnose myself?
No. They are educational tools, not medical advice. A score supports a conversation with a clinician; it never replaces one. Always discuss results with a qualified clinician before making health decisions.
What should I do if a result looks dangerous?
Seek urgent medical care rather than recalculating. If you think you may be experiencing an emergency, call your local emergency number immediately.
Which calculator should I start with?
Pick the speciality above that matches your question. Each speciality page lists its calculators with plain-English descriptions, so you can find the right tool in seconds.