Nutrition Calculators

Free, science-backed calculators to plan your nutrition, find your daily calories, total energy expenditure, macro targets, and BMI in seconds.

Calorie Calculator

Find how many calories you need each day to lose, maintain, or gain weight.

See how long it takes to reach your goal weight and the deficit it needs.

Estimate your total daily energy expenditure, the calories you burn in a day.

Find your basal metabolic rate, the calories you burn at complete rest.

Get your daily protein, carb, and fat targets in grams for your goal.

Find your daily protein target in grams, by weight and goal.

Check your body mass index from your height and weight.

Estimate your body fat percentage with the U.S. Navy tape-measure method.

Find a healthy weight range for your height, plus classic ideal-weight formulas.

Estimate calories burned for walking, running, cycling, and more.

Estimate how much water to drink per day from your weight and activity.