Fitness & Health Calculators
Free fitness and health calculators for body composition, calorie needs, running pace, and pregnancy dating. Results are general estimates, not medical advice.
Fitness
- BMI CalculatorBody mass index with healthy weight range, US or metric.
- Anorexic BMI CalculatorCheck BMI against anorexia nervosa thresholds.
- Weight Watchers Points CalculatorEstimate SmartPoints values for foods.
- Overweight CalculatorHow many kilos above the healthy range you are.
- Calorie CalculatorDaily calorie needs to maintain, lose, or gain weight.
- Body Fat CalculatorEstimate body fat percentage with the U.S. Navy method.
- BMR CalculatorBasal metabolic rate by three common formulas.
- Ideal Weight CalculatorIdeal body weight by four classic formulas.
- Pace CalculatorRunning pace, speed, and race time predictions.
- Army Body Fat CalculatorThe U.S. Army body fat standards check.
- Lean Body Mass CalculatorEstimate lean body mass and body composition.
- Healthy Weight CalculatorHealthy weight range for your height.
- Calories Burned CalculatorCalories burned by activity, weight, and duration.
- One Rep Max CalculatorPredict your one-rep max from any set.
- Target Heart Rate CalculatorTraining heart rate zones by age.
Pregnancy
- Pregnancy CalculatorGestational age, trimester, and due date estimates.
- Pregnancy Weight Gain CalculatorRecommended weight gain during pregnancy.
- Pregnancy Conception CalculatorEstimate when conception occurred.
- Due Date CalculatorEstimated due date from LMP, conception, or IVF.
- Ovulation CalculatorPredict your fertile window and next periods.
- Conception CalculatorEstimate conception and due dates from cycle data.
- Period CalculatorTrack and predict menstrual cycles.
Nutrition & Body
- Macro CalculatorDaily protein, carb, and fat targets.
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