Health Calculators
BMI, calories, fitness calculations
Take control of your health with evidence-based calculators built on established medical formulas. Track your BMI, estimate daily calorie needs, calculate body fat percentage, plan your macros, and more. All results include context so you understand what the numbers actually mean for your wellbeing.
BMI Calculator
Calculate your Body Mass Index and see what category you fall in.
BMR Calculator
Calculate your Basal Metabolic Rate — calories burned at rest.
Calorie Calculator
Calculate daily calorie needs based on your activity level.
Ideal Weight Calculator
Find your ideal body weight range based on height and gender.
Body Fat Calculator
Estimate body fat percentage using measurements.
Water Intake Calculator
Calculate your daily water intake based on weight, activity and climate.
Calories Burned Calculator
Calculate calories burned during 50+ activities using MET values.
Macros Calculator
Calculate your daily protein, carbs and fat targets based on your goal.
Blood Pressure Category
Check your blood pressure category and understand what it means for your health.
Heart Rate Zones
Calculate your 5 training heart rate zones using the Karvonen formula.
BAC Calculator
Estimate your Blood Alcohol Content using the Widmark formula.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and health risk category using WHO standards.
Pregnancy Due Date Calculator
Calculate your estimated due date from your last period, conception date, or IVF transfer.
Ovulation Calculator
Find your ovulation day and fertile window based on your cycle length.
Sleep Calculator
Find the best bedtime or wake time based on 90-minute sleep cycles.
VO2 Max Calculator
Estimate your VO2 max fitness level using multiple test methods.
One Rep Max Calculator
Calculate your 1RM from any weight and rep count using multiple formulas.