Online Medical Calculators
Free dosage, calorie, weight & lab calculators — instant results, no signup
Find your calculator — dosage, nutrition, labs, fitness & more
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Anthropometry & Body Composition
17 calculators
BMI, body surface area, metabolic rate, and body composition screening tools.
- Adjusted Body Weight — AdjBW for obesity dosing
- BMI Prime — BMI / 25
- Basal Metabolic Rate (BMR) — Mifflin-St Jeor
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Nutrition & Diet
17 calculators
Calorie needs, macro targets, and diet planning calculators for clinical and wellness use.
- Alcohol Calories — kcal from ethanol
- Alcohol Units — Standard drinks
- Calorie Deficit for Weight Loss — 7700 kcal/kg
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Clinical
0 calculators
Common bedside and lab-derived medical calculation tools.
Popular calculators
A quick look at 12 of 201 tools. Open any card for instant results.