Health Calculators

Calculate your intermittent fasting schedule.

Calculate your Body Mass Index (BMI) using your height and weight.

Calculate your daily calorie needs based on your age, height, weight, and activity level.

Calculate your daily protein, carbohydrate, and fat targets based on your calorie goal and fitness objective.

Predict your fertile window and most likely ovulation date based on your last period and average cycle length.

Find the best bedtime or wake-up time based on 90-minute sleep cycles.

Calculate your estimated due date based on your last menstrual period or conception date.

Find out exactly how many weeks pregnant you are based on your last menstrual period.

Calculate your dog's age in human years using the scientifically accurate method based on dog size and breed.

Calculate your running pace, finish time, or distance for any race.

Estimate your body fat percentage using the US Navy circumference method.

Calculate body fat percentage using the US Army method with circumference measurements.

Calculate your Basal Metabolic Rate (BMR) — the number of calories your body burns at complete rest.

Calculate your Total Daily Energy Expenditure (TDEE) — the total calories you burn per day based on your body stats and activity level.

Calculate your daily recommended water intake based on body weight, activity level, and climate.

Calculate your daily protein requirements based on body weight, activity level, and fitness goal.

Estimate your one-rep maximum (1RM) for any lift — bench press, squat, deadlift — from a submaximal effort.

Calculate your target heart rate zones for fat burning, cardio fitness, and peak performance.

Calculate how long it will take to reach your goal weight based on your daily calorie deficit.

Find your ideal weight range based on height and sex using multiple established formulas — BMI range, Devine, and Hamwi methods.

Calculate calories burned walking based on your weight, duration, and pace.

Calculate calories burned running based on weight, duration, and speed.

Convert steps to calories burned.

Convert steps to miles and kilometres.

Calculate your 5K pace from your finish time, or predict your finish time from your pace.

Calculate your 10K pace from finish time, or find the pace needed to hit your target 10K time.

Calculate calories burned on the treadmill based on weight, speed, incline, and duration.

Calculate body surface area (BSA) using the Mosteller and DuBois formulas.

Find out what date you'll reach your target weight based on your planned rate of loss or gain per week.

Estimate your conception date from your due date or last menstrual period.

Calculate your baby's exact age in weeks, months, and years.

Compare your baby's weight and height to WHO growth chart medians.

Predict your child's adult height using the mid-parental height formula based on both parents' heights.

Find recommended pregnancy weight gain based on pre-pregnancy BMI.

Calculate estimated due date for a twin pregnancy.

Calculate extra daily calories needed while breastfeeding based on number of sessions and duration.

Find out when your newborn's next feed window is and how much total sleep they need based on age.

Find out when your child will start kindergarten based on their birthday and your state's cutoff date.