All calculators
12 calculators
Basal Metabolic Rate (BMR)
Estimated resting daily energy expenditure.
Mifflin-St Jeor equation
Body Fat Percentage
Body-fat estimate from circumference measurements.
US Navy circumference method
Body Mass Index (BMI)
Screening index for weight status using height and weight.
BMI = kg / m²
Body Surface Area (BSA)
Surface area estimate frequently used in dosing workflows.
Mosteller equation
Ideal Body Weight
Reference weight estimate based on height and sex.
Devine equation
Total Daily Energy Expenditure (TDEE)
Estimated daily calories including activity.
TDEE = BMR × activity factor
Anion Gap
Calculated serum anion gap from routine electrolytes.
AG = Na - (Cl + HCO3)
Corrected Calcium
Albumin-corrected total calcium estimate.
Corrected Ca = measured + 0.8 × (4 - albumin)
Creatinine Clearance (CrCl)
Estimated creatinine clearance from age, sex, weight, and creatinine.
Cockcroft-Gault equation
Mean Arterial Pressure (MAP)
Perfusion pressure estimate from blood pressure values.
MAP = (SBP + 2 × DBP) / 3
Daily Water Intake
Hydration target based on body weight.
35 ml/kg/day
Target Heart Rate Zones
Training zones using age and resting heart rate.
Karvonen method
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