Nutrition Calculator

  • Crude Protein Calculator
    Calculate crude protein percentage from nitrogen content using the Kjeldahl conversion factor (default 6.25). Free, fast feed and food analysis tool.
  • Daily Sugar Limit Calculator (WHO/AHA)
    Find your daily added/free sugar limit in grams using WHO (10% and 5% of calories) and AHA (36g men, 25g women) guidelines.
  • Puppy Food Calculator
    Calculate how much to feed your puppy each day based on weight, age, and food calories. Uses the RER energy formula for healthy growth.
  • Horse Feed Calculator
    Calculate how much hay and grain to feed your horse each day based on body weight, using the standard 2% of body weight forage rule.
  • Cat Food Calculator
    Calculate how much to feed your cat each day in grams based on weight, life stage and food calorie density using the vet RER/DER energy formula.
  • Daily Caffeine Intake Calculator
    Add up caffeine from coffee, espresso, tea, energy drinks and soda. See your total mg per day and how it compares to the 400 mg safe limit.
  • Daily Protein Requirement Calculator
    Calculate your daily protein needs in grams from body weight and activity level, from the 0.8 g/kg RDA up to 2.2 g/kg for athletes.
  • Calorie Macro Split Calculator
    Convert your daily calorie target and macro percentages into grams of protein, carbs and fat. Free macro split calculator with instant results.
  • Sodium to Salt Calculator
    Convert sodium (mg) to salt (grams) instantly. Multiply sodium by 2.5 to find equivalent table salt (NaCl) for nutrition labels and diet tracking.
  • Creatine Dosage Calculator
    Calculate your personalized creatine monohydrate loading and maintenance dose by body weight (kg or lb), based on 0.3 and 0.03 g/kg/day.
  • Protein Intake Calculator
    Calculate your daily protein intake in grams from body weight and activity level. Find how much protein per day and per meal you need to hit your goals.
  • Calories from Fat, Protein & Carbs Calculator
    Calculate total calories from fat, protein, carbs and alcohol grams using the 9/4/4/7 kcal-per-gram Atwater factors, plus each macro's % of energy.
  • Pregnancy Calorie Needs Calculator
    Estimate daily calorie needs during pregnancy by trimester. Uses Mifflin-St Jeor TDEE plus standard +340/+452 kcal add-ons. General guidance only.
  • Calories to Fat Loss Calculator
    Convert a calorie deficit into estimated body-fat loss in kg and lb. Enter your daily deficit and days to see how much fat you could lose.
  • Recipe Scaling Calculator
    Scale any recipe ingredient up or down for a new number of servings. Enter the original amount and servings to get the adjusted quantity instantly.
  • Cooking Measurement Conversion Calculator
    Convert cooking measurements between teaspoons, tablespoons, cups, fluid ounces, pints, quarts, gallons, milliliters and liters (US units) instantly.
  • Pizza Calculator
    Find out how many pizzas to order for any party. Enter guests, slices per person, and slices per pizza to get the exact number to buy.
  • Pet Daily Calorie Requirement Calculator
    Estimate how many calories a dog or cat needs per day from body weight using the veterinary RER (70*W^0.75) and maintenance energy (MER) formula.
  • Keto Macros Calculator
    Calculate your daily keto macros (fat, protein, carbs in grams) from your calorie target using a standard 70/25/5 ketogenic split.
  • Sugar Content in Soft Drinks Calculator
    Estimate the grams of sugar in a soft drink from its nutrition-label carbohydrate value and see it as an equivalent number of 3 g sugar sticks.
  • Zero-Calorie / Low-Calorie Drink Actual Calorie Calculator (Japan)
    Japan labeling rules: a "zero calorie" drink can still have under 5 kcal/100 mL. Enter your beverage size to see the max hidden calories per serving.
  • Calorie Deficit Calculator
    Calculate your daily calorie deficit from TDEE and target intake, plus estimated weekly fat loss in pounds and kilograms.
  • Caffeine Intake Calculator
    Estimate how much caffeine is still in your body using a half-life decay model. Enter your dose, hours since intake, and half-life to see remaining mg.
  • Macro Calculator
    Macro Calculator - Calculate your daily macronutrient needs. Enter your age, gender, weight, height, activity level, and goals to get personalized recommendations for calories, protein, carbs, and fats.

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