Nutrition Calculators
Last updated: September 2026
Macro Nutrient Distribution Calculator
Determine how many grams of protein to eat daily based on your calorie target, body weight, goal, and diet style; the rest of your calorie budget goes to carbohydrates and fat.
Meal Calorie Calculator
Calculate the total calories in any meal by entering the grams of protein, carbohydrates, and fat.
Carbohydrate Calculator
Compute the daily grams of carbohydrate you should eat given your total calorie target and the share of calories that should come from carbs.
BMI and Body Fat Percentage Calculator
Computes your BMI and estimates body fat percentage from weight, height, age and sex (Deurenberg formula), or from neck, waist and hip tape measurements with the U.S. Navy circumference method.
Calcium Intake Calculator
Determine your recommended daily calcium intake based on age and gender.
BMR / TDEE Calculator
Estimate your daily calorie needs using the revised Harris-Benedict equation, then adjust for activity to get your Total Daily Energy Expenditure (TDEE) — the rough number of calories you burn in 24 hours when you eat a maintenance diet.
BMI Calculator
Calculate Body Mass Index (BMI) — body weight in kg divided by height in metres squared — to screen for under/overweight categories.
Macro Calculator
Split your daily calorie target into grams of protein, carbohydrates, and fat tuned to your goal — fat loss, muscle gain, or maintenance.
Nutrient Density Calculator
Score any food's nutritional value relative to its calorie cost using protein, fiber, vitamin C, and iron content.
Carb Counting Calculator
Calculate total carbohydrate grams in a portion by multiplying number of servings by carbs per serving.
Glycemic Load Calculator
Calculate glycemic load (GL) by multiplying glycemic index (GI) by carb content (grams) and dividing by 100.
Iron Requirement Calculator
Find your recommended daily iron intake based on age, gender, and pregnancy status.
Caffeine Intake Calculator
Calculates your total daily caffeine intake in milligrams from coffee, tea, and soda.
Fat Intake Calculator
Compute your daily grams of dietary fat from a total calorie target and the share of calories you want from fat.