Health & Fitness Calculators
Comprehensive tools for tracking your health, fitness progress, and medical metrics.
Diet & Metabolism
BMI CalculatorCalculate your Body Mass Index.
New BMI (Oxford)Trefethen formula for taller/shorter people.
Asian BMIAdjusted cutoffs for Asian populations.
BMR CalculatorBasal Metabolic Rate estimator.
TDEE CalculatorTotal Daily Energy Expenditure.
Calorie CalculatorEstimate daily calorie maintenance.
Calorie DeficitPlan weight loss safely.
Macro CalculatorOptimal protein, carb, and fat ratios.
Weight Loss PercentageTrack weight loss progress.
Target Heart RateKarvonen zones for fat loss & cardio.
Water IntakeDaily hydration recommendation.
Body Composition
Body Fat (US Navy)Estimate body fat percentage.
Relative Fat Mass (RFM)Better Than BMI. Uses height & waist.
Fat-Free Mass (FFMI)Muscle mass index for bodybuilders.
Body Roundness (BRI)The 'New Killer of BMI'. Models body as an ellipse.
Body Adiposity Index (BAI)Measure body fat without a scale.
VO2 Max CalculatorRockport Walk & Cooper Run tests.
One Rep Max (1RM)Estimate max lift safety.
Running PaceCalculate splits & finish times.
Skinfold Body FatEstimate body fat with calipers.
Ideal WeightFind your healthy weight range.
Waist-to-Hip RatioAssess health risk distribution.
Waist-to-Height RatioAlternative obesity indicator.
Body ShapeDetermine your body shape type.
Face ShapeDetermine your face shape for styling.
Lean Body MassCalculate muscle vs fat mass.
Body Frame SizeEstimate bone structure size.
ABSI CalculatorA Body Shape Index. Better than BMI.
Ponderal IndexFor infants & tall adults (Corpulence).
Pregnancy & Fertility
Due Date CalculatorEstimate baby's arrival date.
Ovulation CalculatorTrack fertile window.
Conception DateFind when you conceived.
Pregnancy Weight GainTrack healthy weight gain.
IVF Due DateCalculate IVF due dates.
Gestational AgeDetermine fetal age.
Child Height PredictorPredict your child's adult height.
Clinical & Lifestyle
Biosimilar SavingsCalculate cost savings.
Drug Half-LifeEstimate when a drug leaves your system.
Pediatric DosageSafe medication dosing for kids.
Pediatric Growth TrackerCDC BMI Percentiles (2-20y).
BSA CalculatorBody Surface Area calculation.
IV Drip RateCalculate gtts/min for nurses.
MAP (Blood Pressure)Mean Arterial Pressure.
A1C CalculatorConvert A1C to average glucose.
HOMA-IR CalculatorInsulin Resistance score & Diabetes risk.
GFR CalculatorKidney function test (CKD-EPI 2021).
Anion GapDiagnose Metabolic Acidosis (MUDPILES).
ANC CalculatorNeutrophil count for chemo patients.
Diabetes Risk TestAssess type 2 diabetes risk.
Framingham Risk10-year heart disease risk.
Adjusted Body WeightFor clinical dosing calculations.
QTc CalculatorCorrected QT Interval (Bazett/Fridericia).
Sleep Cycle CalculatorWake up refreshed with 90-min cycles.
Corrected Calcium CalculatorAdjust calcium for albumin (Payne's Formula).
Sodium Correction CalculatorCorrect sodium for hyperglycemia (Katz Formula).
BAC CalculatorEstimate blood alcohol content.
Smoking CostCalculate long-term cost of smoking.
Alcohol CostCalculate financial impact of drinking.
Creatinine ClearanceEstimate kidney function (Cockcroft-Gault).
FENa CalculatorDiagnose Prerenal Azotemia vs ATN.
FEUrea CalculatorAKI diagnosis for patients on diuretics.
Bedridden HeightEstimate height from knee (Chumlea Method).