Fitness & Health Calculators
BMI, calories, macros, pregnancy, and body measurements. Browse all 31 free fitness & health calculators below.
BMI Calculator
Calculate your Body Mass Index and see which weight category you fall into.
Calorie Calculator
Find your daily calorie needs for maintenance, weight loss, or gain.
Body Fat Calculator
Estimate your body fat percentage using the US Navy method.
BMR Calculator
Calculate your Basal Metabolic Rate — calories burned at rest.
Macro Calculator
Get your daily protein, carbs, and fat targets for any fitness goal.
Ideal Weight Calculator
Find your ideal body weight according to multiple medical formulas.
Pregnancy Calculator
Get your full pregnancy timeline, due date, and weekly milestones.
Pregnancy Weight Gain Calculator
Track recommended weight gain by pregnancy week and pre-pregnancy BMI.
Pregnancy Conception Calculator
Find the likely conception date from your due date or last period.
Due Date Calculator
Calculate your estimated due date from your last period or conception date.
Pace Calculator
Solve for running pace, finish time, or distance — enter any two.
Army Body Fat Calculator
Calculate body fat % using the US Army method (AR 600-9).
Carbohydrate Calculator
Find your recommended daily carbohydrate intake.
Lean Body Mass Calculator
Calculate your lean body mass using Boer, James, or Hume formulas.
Healthy Weight Calculator
Find the healthy weight range for your height and gender.
Calories Burned Calculator
Estimate calories burned for hundreds of activities using MET values.
One Rep Max Calculator
Estimate your one-rep max from a sub-maximal lift.
Target Heart Rate Calculator
Find your target heart rate training zones.
Protein Calculator
Find your daily protein requirements based on your goals.
Fat Intake Calculator
Calculate your recommended daily fat intake.
TDEE Calculator
Calculate your Total Daily Energy Expenditure — all calories you burn per day.
Ovulation Calculator
Predict your fertile window and ovulation date.
Conception Calculator
Estimate your likely conception date.
Period Calculator
Predict upcoming period dates based on your cycle length.
GFR Calculator
Calculate your estimated Glomerular Filtration Rate (kidney function).
Body Type Calculator
Identify your body type — ectomorph, mesomorph, or endomorph.
Body Surface Area Calculator
Calculate your body surface area using multiple formulas.
BAC Calculator
Estimate your blood alcohol content based on drinks and body weight.
Anorexic BMI Calculator
Calculate BMI and see how it compares to anorexia diagnostic thresholds.
Weight Watcher Points Calculator
Estimate Weight Watchers points for any food using legacy formulas.
Overweight Calculator
Determine if you are overweight and calculate excess weight.