Tools & Resources
Free calculators, symptom guides and test-result explainers to help you understand your health and prepare for conversations with your doctor.
Health calculators
24.2BMI
Healthy weight range
BMI is a rough screening measure. It does not account for muscle, age, sex or ethnicity, so talk to your doctor about what a healthy weight means for you.
2.5litres / day
A general estimate of total fluid from drinks and food. Needs vary with health conditions, pregnancy and medicines; follow your doctor's advice if you have been told to limit fluids.
185estimated max heart rate (bpm)
Estimated with the common "220 minus age" formula. Medicines such as beta blockers and heart conditions change these numbers; check with your doctor before starting intense exercise.
Symptom checkers & health analyzers
These tools give general information only and can't diagnose you. If you're worried about a symptom, contact a doctor. In an emergency, call your local emergency number.