Health
BMI and everyday health calculators.
Popular in Health
BMI Calculator
Calculate Body Mass Index from height and weight.
Calorie / TDEE Calculator
Calculate your BMR and daily calorie needs (TDEE).
Sleep Calculator
Find the best bedtime based on 90-minute sleep cycles and your wake-up time.
Pregnancy Due Date Calculator
Estimate your due date and current gestational age from your last period or conception date.
All Health calculators
Body Fat Calculator
Estimate body fat percentage using the US Navy tape-measure method.
Ideal Weight Calculator
Estimate ideal body weight from height using the Devine formula.
Healthy Weight Calculator
Find the healthy weight range for your height and see how your current weight compares.
Lean Body Mass Calculator
Estimate lean body mass and fat mass from height and weight.
Water Intake Calculator
Calculate your recommended daily water intake based on weight and exercise.
Protein Intake Calculator
Calculate your recommended daily protein intake based on weight and activity level.
Macro Calculator
Split your daily calorie target into protein, carb, and fat grams.
Calories Burned Calculator
Estimate calories burned during an activity based on MET value, weight, and duration.
Pace Calculator
Calculate running or walking pace and speed from distance and time.
Heart Rate Zone Calculator
Find your training heart rate zones based on age and resting heart rate.
One-Rep Max Calculator
Estimate your one-rep max from a lifted weight and rep count.
Body Surface Area Calculator
Calculate body surface area from height and weight using the Mosteller formula.
GFR Calculator
Estimate glomerular filtration rate (eGFR) from age, sex, and serum creatinine.
Pregnancy Weight Gain Calculator
Find your recommended pregnancy weight gain range based on pre-pregnancy BMI.
Ovulation Calculator
Estimate your ovulation date and fertile window from your last period and cycle length.
Period Calculator
Predict your next several period dates from your last period and cycle length.
Vaccination Schedule Calculator
Get your baby's vaccination schedule based on date of birth.
Baby Growth Percentile Calculator
Estimate your baby's weight percentile compared to WHO growth references.
Child Height Predictor
Predict a child's likely adult height from parents' heights.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and WHO body-shape risk category.
Blood Alcohol Content (BAC) Calculator
Estimate blood alcohol content from drinks consumed, body weight and time elapsed.
Pregnancy Weight Gain by Trimester Calculator
See recommended pregnancy weight gain broken down by trimester.