Health & Fitness Calculators
Free online health and fitness calculators including BMI, Calorie, Body Fat, and Pregnancy.
97 available tools
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- Alcohol Metabolism Time CalculatorEstimate the time it will take for your BAC to drop to a safe level.
- Army Body Fat Calculator | US Military Tape TestFree online Army body fat calculator. Estimate your body fat percentage using the official U.S. Army tape test method (neck, waist, hip measurements).
- Average cycling speed calculatorCalculate riding speed.
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- Baby eye color genetic calculatorPredict the probability of the baby's eye color based on the parent's eye color.
- BAC Calculator | Blood Alcohol ContentEstimate your Blood Alcohol Content (BAC) based on what you drank, your weight, and time passed.
- Bench Press Max CalculatorEstimate your 1 Rep Max for bench press.
- Bike Gear Inch CalculatorCalculate your bicycle gear inches.
- Biological clock rhythm calculatorCalculate your current physical, emotional and intellectual body clock cycles.
- Blood Donation CalculatorWhen can you donate blood next?
- blood glucose unit converterConvert mg/dL to mmol/L and back.
- blood pressure level calculatorCheck that your blood pressure readings are within a healthy range.
- Blood Sugar Converter | mg/dL to mmol/LConvert blood glucose levels between mg/dL and mmol/L.
- Blood type genetic calculatorPredicting the likely blood types of the next generation.
- Blood VolumeEstimate blood volume (Nadler).
- BMI Calculator: Check Your Body Mass IndexCalculate your Body Mass Index (BMI) instantly. Our zero-click calculator supports both metric and imperial measurements to help you check your healthy weight.
- BMI Prime CalculatorCalculate your BMI Prime ratio.
- BMR basal metabolic rate (simple version)Quickly estimate basal metabolic rate.
- BMR CalculatorCalculate Basal Metabolic Rate.
- Body Adiposity IndexCalculate BAI.
- Body Fat Calculator: US Navy MethodCalculate your body fat percentage instantly using the highly accurate US Navy Tape Measure method.
- Body Surface Area (BSA) CalculatorCalculate body surface area (Mosteller's formula).
- Bowling Handicap CalculatorCalculate your bowling handicap for leagues.
- Bowling Score CalculatorCalculate your perfect bowling score based on frames.
- Bowling Speed CalculatorCalculate how fast you roll your bowling ball.
- BSA Calculator | Body Surface AreaCalculate your Body Surface Area (BSA) using the DuBois, Mosteller, or Haycock formulas.
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- Caffeine Metabolism CalculatorCalculate the amount of caffeine remaining in your body.
- Calorie Calculator: Find Your Daily Energy Needs (TDEE)Calculate exactly how many calories you need to maintain, lose, or gain weight. Based on the scientifically proven Mifflin-St Jeor equation.
- Calorie Deficit CalculatorCalculate weight loss timeline.
- Calories Burned Calculator | Exercise & Weight LossFree online calories burned calculator. Find out exactly how many calories you burn during running, walking, and other activities.
- Carb cycling calculatorMacronutrients for planning high-carb vs. low-carb days.
- Carb Intake CalculatorDaily carbohydrate needs.
- Chess Win ProbabilityCalculate the probability of winning a chess match based on ELO difference.
- Child Blood Type CalculatorPredict your future child's possible blood types based on the parents' blood types.
- Children's adult height predictionPredict the future height of the child based on the height of the parents.
- Children's BMI Percentile CalculatorAssess the growth and development of children and adolescents.
- Cholesterol Ratio CalculatorCalculate your Total to HDL cholesterol ratio.
- Conception Date Calculator | PregnancyCalculate the probable date of conception based on your due date.
- Cycling Calorie CalculatorCalculate calories burned while cycling.
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- Daily maintenance calorie calculatorCalculate the calories needed to maintain your current weight.
- Daily Water Intake Calculator | Hydration GoalFree online water intake calculator. Find out exactly how much water you should drink daily based on your weight, exercise, and climate.
- Darts Score CalculatorCalculate your darts checkout score.
- Dog Chocolate Toxicity CalculatorEvaluate the risk of eating chocolate.
- Due Date CalculatorEstimate due date from LMP.
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- GFR kidney function calculatorEstimate glomerular filtration rate.
- Glycated hemoglobin to blood sugarA1C to eAG.
- Goal weight calculatorCalculate the weight required to reach your target body fat based on your current body fat percentage.
- Golf Handicap CalculatorCalculate your estimated golf handicap index.
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- Ideal body fat percentage calculatorEvaluate whether your body fat percentage is within the ideal range.
- Ideal Weight CalculatorDevine formula for ideal weight (male approx).
- Intermittent Fasting CalculatorCalculate your eating and fasting windows based on your preferred IF schedule.
- Irregular cycle ovulation calculatorPredict ovulation for irregular menstruation.
- IVF due date calculatorCalculate the expected date of delivery based on the IVF transplant date.
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- Period Calculator | Menstrual CycleEstimate your next period and fertile window.
- Ponderal Index CalculatorMeasure of leanness.
- Pregnancy Due Date Calculator ToolCalculate your estimated due date, current timeline, and remaining days until birth using your last menstrual period.
- Pregnancy weight gain calculatorCalculate the recommended healthy weight gain range during pregnancy based on your pre-pregnancy BMI.
- Protein CalculatorCalculate your daily protein requirements based on your goals.
- Protein Intake CalculatorDaily protein requirement.
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- sleep cycle calculatorCalculate the best time to wake up or go to bed.
- Sleep Cycle CalculatorFind out when to wake up or go to sleep to feel refreshed.
- Steps to Miles CalculatorConvert your step count to miles and kilometers based on your height and stride length.
- Swim Pace CalculatorCalculate your swimming pace per 100m.
- Swimming Calorie CalculatorCalculate calories burned by swimming.
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- Target Heart RateCalculate target heart rate for exercise.
- Target Heart Rate Calculator | Fat Burn & Cardio ZonesFree online target heart rate calculator. Calculate your maximum heart rate and ideal training zones for fat burn and cardio.
- TDEE CalculatorCalculate Total Daily Energy Expenditure.
- True Shooting % CalculatorCalculate a player's True Shooting Percentage (TS%).
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- Waist to Height RatioMeasure body fat distribution.
- Waist to Hip RatioAssess health risk from body shape.
- Walking Calorie CalculatorCalculate calories burned while walking based on weight and distance.
- Walking Calories CalculatorEstimate the calories burned by walking.
- Water Intake CalculatorDaily water intake based on weight.
- Wilks Calculator | Powerlifting ScoreFree online Wilks score calculator. Compare relative strength across different weight classes in powerlifting using the standard formula.
- Wilks ScorePowerlifting pound-for-pound metric (approx).