Free Health Calculators — CalcSphere
Free health calculators to help you understand your body and make informed wellness decisions. Calculate your BMI to assess your weight category, estimate your daily calorie needs based on your activity level, find your ideal body weight range, determine how much water you should drink each day, or calculate your maximum heart rate and training zones. CalcSphere's health calculators are based on medically accepted formulas and research. We offer BMI, calorie, ideal weight, water intake, pregnancy due date, and heart rate zone calculators — all completely free, mobile-friendly, and instant. Perfect for fitness enthusiasts, healthcare students, dietitians, personal trainers, and anyone on a health improvement journey.
BMI Calculator
Calculate BMI, weight category, ideal weight range, and exactly how mu...
healthCalorie Calculator
Calculate daily calorie needs (TDEE) based on age, weight, height, and...
healthIdeal Weight Calculator
Find your ideal body weight range for your height, gender, and body fr...
healthWater Intake Calculator
Calculate how much water to drink daily based on weight and activity l...
healthPregnancy Due Date Calculator
Estimate your baby's due date and current pregnancy week from your las...
healthHeart Rate Zone Calculator
Find your max heart rate and all 5 training zones for optimal workout ...
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