Health & Fitness Calculators

Calculate your Body Mass Index and find out your weight category.

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

Estimate your body fat percentage using the U.S. Navy method.

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

Calculate your Total Daily Energy Expenditure based on activity level.

Calculate your daily protein, carbs, and fat targets based on your goals.

Calculate running or walking pace, time, or distance.

Calculate how much water you should drink daily based on your weight and activity.

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

Estimate your one-rep max from the weight and reps of a working set.

Convert dog years to human years using the scientifically accurate logarithmic formula.

Track your pregnancy week by week with baby size, development milestones, and symptoms.

Calculate how much food to feed your dog daily based on weight, age, and activity level.

Calculate your ideal weight range using Devine, Robinson, Miller, and Hamwi formulas.

Estimate your blood alcohol concentration based on drinks, weight, and time.

Estimate your conception date and fertile window from due date or last period.

Calculate your 5 heart rate training zones for optimal cardio workouts.

Calculate your daily macros for a ketogenic diet based on your profile and goals.

Plan your intermittent fasting schedule with eating and fasting windows.

Predict your ovulation date, fertile window, and next period.

Check your blood pressure category and get health recommendations.

Calculate your lean body mass and fat mass from body fat or body measurements.

Calculate your Fat-Free Mass Index to evaluate muscular development relative to height.

Estimate your VO2 max using the Cooper 12-minute run or 1.5-mile run test.

Calculate your optimal daily protein intake based on weight, activity level, and fitness goal.

Calculate recommended pregnancy weight gain based on IOM guidelines and pre-pregnancy BMI.

Estimate your BAC and how long until you are sober using the Widmark formula.

Estimate your biological age based on exercise, sleep, diet, stress, and BMI.