Health & Fitness Calculators
Our Health & Fitness Calculators are tailored for health enthusiasts and professionals alike. Calculate your Basal Metabolic Rate with our BMR Calculator to understand your energy expenditure, or use our Calorie Calculator to manage your diet. Expectant mothers can track their pregnancy milestones with our Pregnancy Calculator and monitor weight gain with our Pregnancy Weight Gain Calculator. For fitness planning, our Army and Body Fat Percentage Calculators offer precise body fat measurements based on standardized methods.
Army Body Fat CalculatorFree Army body fat calculator using the ABCP tape method. Enter neck, waist, height (and hips for women) to check if you pass for your age.
BAC CalculatorFree BAC calculator. Enter your drinks, weight, sex and time to estimate blood alcohol content with the Widmark formula. Estimate only.
BMI CalculatorFree BMI calculator. Enter your weight and height in metric or imperial to get your body mass index and WHO weight category instantly.
BMR CalculatorFree BMR calculator using the Mifflin-St Jeor formula. Enter weight, height, age and sex to find your resting calorie burn and daily calorie needs.
Body Fat Percentage CalculatorFree body fat percentage calculator using the US Navy tape method. Enter your measurements to estimate body fat, lean mass and your fitness category.
Body Type CalculatorFree body type calculator. Enter your bust, waist, and hip measurements to find your shape: hourglass, pear, apple, rectangle, or inverted triangle.
Bra Size CalculatorFree bra size calculator: measure your underbust and bust to get your band and cup size, with US, UK and EU sizing and sister sizes.
Calorie CalculatorFree calorie calculator using the Mifflin-St. Jeor equation. Find your daily maintenance calories and the deficit to lose weight or surplus to gain.
Calories Burned CalculatorFree calories burned calculator. Enter your weight, activity, and time to estimate calories burned using the MET formula for walking, running, and cycling.
Ideal Weight CalculatorFree ideal weight calculator using the Devine, Robinson, Miller, and Hamwi formulas. Estimate a healthy body weight from your height and sex.
Ovulation CalculatorFree ovulation calculator. Enter the first day of your last period and your cycle length to estimate your ovulation date and 6-day fertile window.
Period CalculatorFree period calculator: predict your next period and fertile window from your last period date and average cycle length. Estimate, not medical advice.
Pregnancy CalculatorFree pregnancy calculator: estimate your due date and how many weeks pregnant you are from your last period, conception, ultrasound or IVF transfer date.
Protein CalculatorFree protein calculator: find your daily protein target in grams from your body weight and activity, using the 0.8 to 2.0 g/kg guidelines.
TDEE CalculatorFree TDEE calculator: find your total daily energy expenditure and maintenance calories from BMR and activity, then adjust for weight loss or gain.
The Pregnancy Weight Gain CalculatorFree pregnancy weight gain calculator: see your healthy total weight gain by pre-pregnancy BMI using Institute of Medicine ranges, for one baby or twins.