Health Calculators
BMI, calorie, heart rate & fitness calculators.
BMI Calculator
Calculate your Body Mass Index (BMI) and find out your weight category.
Calorie Calculator
Calculate your daily calorie needs based on age, gender, height, weight, and activity level.
BMR Calculator
Calculate your Basal Metabolic Rate — the calories your body burns at rest.
Body Fat Calculator
Calculate your body fat percentage using the US Navy method or BMI method.
Water Intake Calculator
Calculate your daily water intake needs based on weight, activity, and climate.
Protein Intake Calculator
Calculate your daily protein needs based on weight, activity level, and fitness goal.
Pregnancy Calculator
Calculate your due date, conception date, and pregnancy milestones.
Ovulation Calculator
Calculate your ovulation date and fertile window based on your cycle.
Ideal Weight Calculator
Calculate your ideal body weight range based on height, gender, and frame size.
Heart Rate Calculator
Calculate your maximum heart rate and target heart rate zones for exercise.
Blood Alcohol Calculator
Estimate your Blood Alcohol Content (BAC) based on drinks, weight, and time.
Macro Calculator
Calculate your daily macronutrient targets — protein, carbs, and fat — for your goal.
TDEE Calculator
Calculate your Total Daily Energy Expenditure — how many calories you burn per day.
Lean Body Mass Calculator
Calculate your lean body mass — total weight minus body fat.
Calories Burned Calculator
Calculate calories burned during exercise based on activity, weight, and duration.
Waist to Hip Ratio Calculator
Calculate your waist-to-hip ratio and health risk category.
Waist to Height Ratio Calculator
Calculate your waist-to-height ratio, a strong predictor of cardiovascular disease risk.
Healthy Weight Range Calculator
Find your healthy weight range based on height, age, gender, and BMI.
Target Heart Rate Calculator
Calculate your target heart rate zones for fat burning, cardio, and peak performance.
Pregnancy Weight Gain Calculator
Calculate recommended pregnancy weight gain by trimester based on pre-pregnancy BMI.
Due Date Calculator
Calculate your estimated due date from last menstrual period or conception date.
Baby Growth Percentile Calculator
Calculate baby height and weight percentile based on WHO and CDC growth charts.
Body Shape Calculator
Determine your body shape (apple, pear, hourglass, rectangle) from your measurements.
Intermittent Fasting Calculator
Calculate your eating and fasting windows for 16:8, 18:6, 5:2, and other IF protocols.
Ideal Calorie Deficit Calculator
Calculate your ideal calorie deficit for safe, sustainable weight loss.
One Rep Max Calculator
Estimate your one-rep maximum (1RM) from weight lifted and reps using multiple proven formulas.
Running Pace Calculator
Calculate your running pace, speed, or finish time for any distance including 5K, 10K, half marathon, and marathon.
Cycling Speed Calculator
Calculate average cycling speed, distance covered, or time taken for any ride.
Body Surface Area Calculator
Calculate body surface area (BSA) using Du Bois, Mosteller, and Haycock formulas for medical and fitness use.
VO2 Max Calculator
Estimate your VO2 Max (maximal oxygen uptake) from heart rate, Cooper test, or Rockport walk test results.
Steps to Calories Calculator
Convert daily steps into calories burned based on your weight, height, and walking pace.
Workout Calories Calculator
Calculate total calories burned in a full workout session by adding multiple exercises with individual durations.