Nutrition Calculator

  • Ounces to Grams Calculator
    Convert ounces (oz) to grams (g) instantly. Enter any weight in ounces and get the precise gram and kilogram equivalent using 1 oz = 28.3495 g.
  • Running Calories by Distance Calculator
    Estimate the calories you burn running based on your body weight and the distance you cover. Quick, distance-based running energy expenditure calculator.
  • Pregnancy Calorie Needs Calculator
    Estimate daily calorie needs during pregnancy. Adds the recommended extra kcal per trimester (0/+340/+450) to your maintenance TDEE.
  • Calories from Carbs, Protein & Fat Calculator
    Calculate total calories from grams of carbohydrates, protein, fat and alcohol using the 4-4-9-7 kcal-per-gram Atwater factors, with a macro breakdown.
  • Macros to Calories Calculator
    Convert grams of protein, carbs, fat and alcohol into calories (kcal) instantly. Uses 4/4/9/7 kcal per gram with a full macro breakdown.
  • Cups to Grams Calculator
    Convert cups to grams for any ingredient using density. Pick flour, sugar, butter, water and more, or enter a custom g/mL value. Free and instant.
  • Dog Treat Calorie Limit Calculator
    Find how many treat calories your dog can have per day using the vet 10% rule. Enter weight and activity to get a safe daily treat calorie limit.
  • Grams of Protein Per Meal Calculator
    Convert grams of protein, carbohydrates and fat into calories. Calculate total kcal and macro percentage breakdown using the 4-4-9 Atwater factors.
  • Bulking Calorie & Macro Calculator
    Calculate your daily bulking calories and macros (protein, carbs, fat) for muscle gain using your TDEE plus a 250–500 kcal surplus.
  • Daily Protein Intake by Body Weight Calculator
    Calculate your daily protein needs in grams based on body weight and goal (0.8–2.2 g/kg). Includes per-meal split and protein calories.
  • Macronutrient Calculator
    Convert your daily calorie target and macro percentage split into grams of protein, carbohydrates, and fat per day. Free macro calculator.
  • Salt to Sodium Converter
    Convert grams of salt to milligrams of sodium instantly. 1 g of salt equals 393.4 mg of sodium — track your daily sodium intake easily.
  • Carb to Insulin Ratio (Bolus) Calculator
    Estimate a mealtime insulin bolus from carbs, your carb ratio (ICR), current and target blood glucose, and insulin sensitivity factor (ISF).
  • Pregnancy Water Intake Calculator
    Estimate your daily water needs during pregnancy or breastfeeding based on body weight and exercise. Get results in liters, cups and fluid ounces.
  • Calories Per Serving Calculator
    Calculate calories per serving by dividing total recipe calories by the number of servings. Free, instant per-portion calorie calculator for any recipe.
  • Sugar Grams to Teaspoons Calculator
    Convert grams of sugar to teaspoons instantly. Enter sugar in grams to see the equivalent teaspoons using the standard 4.2 g per teaspoon factor.
  • Macro Percentage of Calories Calculator
    Convert grams of fat, protein and carbs into calories and find the percentage of total calories each macronutrient supplies. Free macro split calculator.
  • Grams to Cups Converter (Flour & Sugar)
    Convert grams to cups for flour, sugar and more. Choose your ingredient and get an instant, accurate cup measurement plus tablespoons.
  • Keto Macro Calculator
    Calculate your daily keto macros in grams. Enter calories and your fat/protein/carb percentages to get fat, protein and carb targets for a ketogenic diet.
  • Daily Protein for Muscle Gain Calculator
    Calculate your daily protein target for muscle gain in grams using 0.7–1.0 g per pound of body weight. Free, fast, and easy to use.
  • Weight Gain Calorie Calculator
    Find how many calories per day you need to gain weight. Calculates your TDEE plus a bulking surplus from your target weekly weight gain.
  • Blood Alcohol Content (BAC) Calculator
    Estimate your blood alcohol content (BAC) with the Widmark formula from drinks, body weight, gender and time. Educational estimate only — never use to decide to drive.
  • Calories to Kilojoules Calculator
    Convert calories (kcal) to kilojoules (kJ) instantly. Enter food energy in kilocalories and get the kJ value using kJ = kcal × 4.184.
  • Carbohydrate Intake Calculator
    Calculate your daily carbohydrate intake in grams from your total daily calories (TDEE) and target carb percentage. Free, fast carb macro calculator.

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