Nutrition Calculators
Last updated: September 2026
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.
TDEE Calculator
Calculate Total Daily Energy Expenditure (TDEE) by computing BMR via Harris-Benedict equation, then multiplying by an activity factor.
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.
Macro Nutrient Distribution Calculator
Determine how many grams of protein, carbohydrates, and fat to eat daily based on your calorie target, body weight, goal, and diet style.
BMI & Body Fat Percentage Calculator
Calculate your BMI and estimate body fat percentage from body measurements using the U.S.
Calcium Intake Calculator
Determine your recommended daily calcium intake based on age and gender.
Meal Calorie Calculator
Calculate the total calories in any meal by entering the grams of protein, carbohydrates, and fat.
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.
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.