Every tool in this category is free — runs in your browser, files never leave your device.
Calculate your BMI and WHO health category — with ideal weight range for your height
Health CalculatorsCalculate your Basal Metabolic Rate (BMR) client-side using Mifflin-St Jeor formulas
Health CalculatorsCalculate your Total Daily Energy Expenditure (TDEE) client-side based on BMR and activity levels
Health CalculatorsCalculate your target daily calorie intakes client-side based on fitness goals
Health CalculatorsPlan your weight loss timeline client-side based on daily calorie deficits
Health CalculatorsCalculate muscle gain targets and daily calorie surpluses client-side
Health CalculatorsSplit your daily target calories client-side into protein, carb, and fat grams
Health CalculatorsCalculate low-carb Ketogenic diet macro gram limits client-side (5% Carb split)
Health CalculatorsCalculate target daily protein grams client-side based on body weight and fitness goals
Health CalculatorsCalculate your target daily hydration ounces or liters client-side based on body weight
Health CalculatorsCalculate your ideal body weight client-side using standard Devine, Robinson, and Miller formulas
Health CalculatorsEstimate your body fat percentage client-side using the US Navy circumference method
Health CalculatorsCalculate your lean body weight client-side using standard Boer and James formulas
Health CalculatorsCalculate your waist-to-hip ratio client-side to evaluate health risk categories
Health CalculatorsCalculate your waist-to-height ratio client-side to check weight distribution risks
Health CalculatorsCalculate your expected baby due date client-side based on your last period date
Health CalculatorsTrack your current gestational week, days, and trimester progress client-side
Health CalculatorsEstimate your upcoming fertile windows and ovulation days client-side
Health CalculatorsPredict upcoming period dates client-side for the next 3 months
Health CalculatorsEstimate your approximate conception window client-side based on your estimated due date
Health CalculatorsEstimate your baby's weight-for-age percentile client-side based on WHO growth benchmarks
Health CalculatorsPredict estimated adult heights client-side based on parental heights
Health CalculatorsCalculate cardio exercise target training zones (Zones 1-5) client-side using the Karvonen method
Health CalculatorsEstimate your maximum heart rate client-side using Tanaka and Fox equations
Health CalculatorsEvaluate your resting heart rate pulse health client-side based on standard benchmarks
Health CalculatorsClassify your blood pressure reading client-side based on standard AHA guidelines
Health CalculatorsConvert blood glucose readings client-side between mmol/L and mg/dL
Health CalculatorsCalculate your total cholesterol-to-HDL ratio client-side to check cardiovascular risk targets
Health CalculatorsEstimate your Blood Alcohol Concentration (BAC) client-side using Widmark formulas
Health CalculatorsCalculate the annual and long-term financial costs client-side of cigarette smoking habits
Health CalculatorsPlan your sleep cycles client-side to wake up refreshed using 90-minute sleep intervals
Health CalculatorsFind the optimal power nap duration client-side based on your goals and schedule
Health CalculatorsCalculate your target running pace client-side based on distance and duration
Health CalculatorsEstimate how many calories you burned client-side from your daily step counts
Health CalculatorsEstimate your maximum weight lift capability (1RM) client-side using Epley and Brzycki formulas
Health CalculatorsEstimate your VO2 Max aerobic fitness client-side using the Cooper 12-minute run test
Health CalculatorsCalculate your Body Surface Area (BSA) client-side using Mosteller formulas
Health CalculatorsEstimate weight-based child drug dosing levels client-side based on standard adult recommendations
Health CalculatorsTrack your baby's immunization timeline client-side based on the standard Bangladesh EPI schedule
Health CalculatorsCalculate intravenous infusion drip rates client-side based on volume, time, and tubing drip factor
Health CalculatorsEstimate your basal metabolic age client-side by comparing your metabolic rate to average curves
Health CalculatorsEstimate your target daily dietary fiber intake client-side based on calorie needs
Health CalculatorsCalculate your blood pressure pulse pressure differentials client-side
Health CalculatorsCalculate your peak daily fertility periods client-side using a menstrual cycle tracking calendar
Health Calculators