Health Calculators
Quick, private health tools. Estimate your Body Mass Index, Basal Metabolic Rate (Mifflin-St Jeor), daily calories (TDEE), macros, ovulation and fertile window, and more. Results are informational only and not medical advice.
BMI Calculator
Body Mass Index from weight and height (metric or imperial).
BMR Calculator
Basal Metabolic Rate using the Mifflin-St Jeor equation.
Calorie Calculator
Daily calories (TDEE) for maintain, lose or gain weight.
Body Fat Calculator
Body fat percentage using the U.S. Navy circumference method.
Ideal Weight Calculator
Devine, Robinson, Miller and Hamwi ideal-weight estimates.
Due Date Calculator
Estimated pregnancy due date using Naegele's rule.
Ovulation Calculator
Estimate ovulation, fertile window and next period from your last period date and cycle length.
Macro Calculator
Daily calories and macros (40/30/30 carbs, protein, fat) from your stats, activity and goal.
Water Intake Calculator
Daily water target in liters, ml and cups from weight and exercise.
Protein Intake Calculator
Daily protein target (g) from your weight and activity goal.
Calories Burned Calculator
Calories burned by activity, weight and time using MET values.
Running Pace Calculator
Pace per km and per mile, speed and even-pace splits from distance and time.
Pregnancy Calculator
Estimated due date, current weeks and days, trimester and milestones — from LMP, due date, conception, ultrasound or IVF transfer.
Conception Calculator
Estimated conception date, fertile window and matching due date from LMP, due date or birth date.
Height Calculator
Predict a child's adult height from both parents' heights using the mid-parental (Tanner) method.
Pregnancy Weight Gain
Recommended total and cumulative pregnancy weight gain by pre-pregnancy BMI, using the 2009 IOM guidelines.