Health Calculators
Calculate BMI, calories, heart rate, pregnancy due date, and more health metrics.
29 calculators available
Alcohol Units
Free alcohol units calculator. Calculate units, calories, and pure alcohol in your drinks. Track against safe drinking guidelines.
Blood Pressure
Free blood pressure calculator. Check your blood pressure category and calculate mean arterial pressure (MAP) from systolic and diastolic readings.
BMI
Free BMI calculator to check your body mass index. Find out if you're underweight, normal, overweight, or obese. See your healthy weight range.
BMR
Free BMR calculator to find your basal metabolic rate. Learn how many calories your body burns at rest using Mifflin-St Jeor and Harris-Benedict equations.
Body Fat %
Free body fat percentage calculator using US Navy method. Calculate your body fat from waist, neck, and hip measurements to understand your body composition.
Caffeine
Free caffeine calculator. Track your daily caffeine intake from coffee, tea, and energy drinks. Know if you're within safe limits.
Calorie
Free calorie calculator to find how many calories you need per day. Calculate calories for weight loss, maintenance, or muscle gain based on your activity level.
Carb Intake
Free carb intake calculator. Calculate how many carbohydrates you need daily based on calories and diet goals.
Cycling Calories
Free cycling calories calculator. Calculate how many calories you burn cycling or biking based on weight, duration, and intensity.
Exercise Calories
Free exercise calorie calculator to find how many calories you burn during walking, running, swimming, cycling, and other activities.
Fat Intake
Free fat intake calculator. Calculate how many grams of fat you should eat daily based on calorie needs and diet type.
Heart Rate Calculator
Free heart rate calculator to find your maximum heart rate, fat burning zone, and target heart rate training zones. Includes Karvonen formula.
Ideal Weight
Free ideal weight calculator. Find your ideal weight based on height and gender using multiple formulas including Devine, Robinson, Miller, and BMI.
Lean Body Mass
Free lean body mass calculator. Estimate your fat-free mass using the Boer formula. Calculate muscle, bone, and organ weight.
Macro Calculator
Free macro calculator to find your daily protein, carbohydrate, and fat needs. Get personalized macro ratios based on your goals.
Max Heart Rate
Free max heart rate calculator. Calculate your maximum heart rate using multiple formulas. Find your training zones based on age.
One Rep Max
Free one rep max calculator. Estimate your 1RM for any lift using the Epley, Brzycki, or Lander formula. Get training percentages.
Ovulation Calculator
Free ovulation calculator to find your ovulation day and fertile window. Determine the best time to conceive with our fertility calendar.
Due Date
Free pregnancy due date calculator. Find out when your baby is due based on your last period or conception date. See your current week and trimester.
Protein
Free protein calculator. Calculate how much protein you need per day based on weight, activity level, and fitness goals.
Running Pace
Free running pace calculator. Calculate your pace per kilometer or mile based on distance and time. Perfect for marathon and race training.
Sleep Calculator
Free sleep calculator to find your ideal bedtime and wake time based on 90-minute sleep cycles. Get sleep recommendations by age group.
Steps to Miles
Free steps to miles calculator. Convert your step count to miles or kilometers based on your stride length. Track your walking distance.
Swimming Calories
Free swimming calories calculator. Calculate how many calories you burn swimming based on weight, duration, and stroke type.
Target Heart Rate
Free target heart rate calculator. Find your optimal heart rate zone for exercise using the Karvonen formula. Personalized by age and resting HR.
TDEE
Free TDEE calculator to find your total daily energy expenditure. Calculate how many calories you burn based on activity level for weight loss or muscle gain.
Waist-Hip Ratio
Free waist to hip ratio (WHR) calculator to assess your health risk. Evaluate cardiovascular risk, body type (apple/pear), and ideal measurements.
Walking Calories
Free walking calories calculator. Calculate how many calories you burn walking based on weight, duration, and pace.
Water Intake
Free water intake calculator to find how much water you should drink daily. Personalized water amount based on weight, activity, and climate.