Online Calculators
Collection of free and easy-to-use calculators
Featured Calculators
BMI Calculator
Calculate your Body Mass Index
Calorie Calculator
Calculate your daily calorie needs
Ideal Weight Calculator
Calculate your ideal weight using multiple scientific formulas
Body Fat Calculator
Calculate your body fat percentage
BMR Calculator (Basal Metabolic Rate)
Calculate your basal metabolic rate and daily calorie needs
TDEE Calculator
Calculate your Total Daily Energy Expenditure
Macro Calculator
Calculate your daily macronutrients
Pregnancy Calculator
Calculate your due date and pregnancy tracking
Pregnancy Weight Gain Calculator
Calculate recommended weight gain during pregnancy
Pregnancy Conception Calculator
Calculate your estimated conception date
Due Date Calculator
Calculate your pregnancy due date
Running Pace Calculator
Calculate your running pace, time, or distance
Army Body Fat Calculator
Calculate your body fat percentage using the US Army formula
Carbohydrate Calculator
Calculate your recommended daily carbohydrate intake
Lean Body Mass Calculator
Calculate your lean body mass using multiple formulas
Healthy Weight Calculator
Calculate your ideal healthy weight range
Protein Calculator
Calculate your daily protein intake
Body Type Calculator
Determine your body type (Ectomorph/Mesomorph/Endomorph)
Calories Burned Calculator
Calculate calories burned during different activities
Body Surface Area Calculator
Calculate your Body Surface Area (BSA)
Blood Type Calculator
Predict your child's blood type based on parents' blood types
Ovulation Calculator
Calculate your ovulation date and fertile window
Period Calculator
Predict your next period and ovulation dates
Body Frame Size Calculator
Determine your body frame size
Heart Rate Calculator
Calculate your maximum heart rate and training zones
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and assess your health risk
One Rep Max Calculator
Calculate your one-repetition maximum (1RM) for weightlifting
Fat Intake Calculator
Calculate your daily fat intake needs
GFR Calculator
Calculate your estimated Glomerular Filtration Rate (eGFR) to assess kidney function. This calculator uses the CKD-EPI equation, the most accurate method for estimating kidney function.
BAC Calculator
Calculate your Blood Alcohol Content (BAC) based on drinks consumed, weight, gender, and time
Weight Watchers Points Calculator
Calculate SmartPoints for foods and your daily points budget