Health Calculators

BMI Calculator

Calculate your Body Mass Index from your height and weight.

BMR Calculator

Calculate your Basal Metabolic Rate using the Mifflin-St Jeor equation.

TDEE Calculator

Calculate your Total Daily Energy Expenditure based on activity level.

Body Fat Percentage Calculator

Estimate body fat percentage using the U.S. Navy circumference method.

Ideal Weight Calculator

Estimate ideal body weight using the Devine formula.

Daily Calorie Calculator

Calculate daily calorie needs to maintain, lose, or gain weight.

Daily Water Intake Calculator

Estimate how much water you should drink per day based on your weight.

Pregnancy Due Date Calculator

Estimate your due date based on the first day of your last menstrual period.

Heart Rate Zone Calculator

Calculate your target heart rate training zones based on age.

Waist-to-Hip Ratio Calculator

Calculate your waist-to-hip ratio, a measure of body fat distribution.

Lean Body Mass Calculator

Estimate lean body mass using the Boer formula.

Blood Alcohol Content (BAC) Calculator

Estimate blood alcohol content using the Widmark formula.

Body Surface Area Calculator

Calculate body surface area using the Mosteller formula.

Blood Pressure Category Checker

Check which blood pressure category your reading falls into.

Pediatric BMI Percentile Estimator

Estimate a child's BMI and compare it to typical ranges.

eGFR (Kidney Function) Calculator

Estimate glomerular filtration rate using the CKD-EPI creatinine equation.

Daily Sugar Intake Limit Calculator

Estimate a recommended daily added sugar limit based on calorie intake.

Pulse Pressure Calculator

Calculate pulse pressure from systolic and diastolic blood pressure readings.

Mean Arterial Pressure Calculator

Calculate mean arterial pressure (MAP) from systolic and diastolic readings.

Body Adiposity Index Calculator

Estimate body fat percentage from hip circumference and height, without weighing yourself.

Ovulation Calculator

Estimate your most fertile days based on your average cycle length.

BMI Prime Calculator

Calculate BMI Prime, the ratio of your BMI to the upper healthy limit.

Ponderal Index Calculator

Calculate the ponderal index, an alternative to BMI using height cubed.

Waist-to-Height Ratio Calculator

Calculate your waist-to-height ratio, a simple cardiometabolic risk indicator.

Maximum Heart Rate Calculator

Estimate your maximum heart rate based on age.

Fat-Free Mass Index (FFMI) Calculator

Calculate FFMI, a measure of muscularity relative to height.

Katch-McArdle BMR Calculator

Calculate your Basal Metabolic Rate using lean body mass (Katch-McArdle formula).

Calcium Daily Value (%DV) Calculator

Calculate what percentage of your daily calcium needs a food or supplement provides.

Iron Daily Value (%DV) Calculator

Calculate what percentage of your daily iron needs a food or supplement provides.

Vitamin D Daily Value (%DV) Calculator

Calculate what percentage of your daily vitamin D needs a food or supplement provides.

Average Blood Pressure Calculator

Calculate your average blood pressure from multiple readings.

Target Weight From BMI Calculator

Calculate what weight you'd need to be to hit a target BMI.

Protein Per Meal Calculator

Calculate how much protein to eat per meal to hit your daily target.