Health Calculators

BMI Calculator

Calculate your Body Mass Index and understand what it means for your health.

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Calorie Calculator

Find your daily calorie needs based on age, gender, weight, height and activity.

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Body Fat Calculator

Estimate body fat percentage using the US Navy method.

Ideal Weight Calculator

Find your ideal weight range based on height and frame size.

Macro Calculator

Calculate daily protein, carbohydrate and fat targets for your goals.

Pace Calculator

Calculate running pace, finish time and distance for any race.

Pregnancy Due Date Calculator

Calculate estimated due date from last menstrual period or conception.

Calorie Burn Calculator

Estimate calories burned during 50+ exercises and activities.

Water Intake Calculator

Calculate recommended daily water intake based on weight and activity.

Sleep Calculator

Find optimal bedtime and wake-up times based on 90-minute sleep cycles.

Heart Rate Calculator

Calculate maximum heart rate and target heart rate zones.

Ovulation Calculator

Estimate ovulation date and fertile window from menstrual cycle.

Protein Calculator

Find your daily protein requirement based on weight and activity level.

Waist-to-Hip Ratio Calculator

Calculate your waist-to-hip ratio and assess health risk.

One Rep Max Calculator

Estimate your one-repetition maximum for any weightlifting exercise.

BMR Calculator

Calculate your Basal Metabolic Rate using multiple formulas.

Body Frame Size Calculator

Determine your body frame size from wrist circumference.

Lean Body Mass Calculator

Calculate lean body mass from weight and body fat percentage.

Pregnancy Weight Gain Calculator

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

Child Growth Percentile Calculator

Calculate height and weight percentiles for children.

Body Surface Area Calculator

Calculate body surface area used in medical dosing.

Smoking Cost Calculator

Calculate the financial cost of smoking over time.

Alcohol Calorie Calculator

Calculate calories in alcoholic beverages.

Steps to Calories Calculator

Convert daily step count to calories burned.

VO2 Max Calculator

Estimate your VO2 max from running performance.

Target Heart Rate Calculator

Calculate target heart rate zones for cardio training.