Carnivore Diet Macro Calculator

Carnivore Diet Macro Calculator

Estimate your daily macronutrient needs (protein and fat) for a carnivore diet based on your personal metrics and goals.

Sedentary (little or no exercise) Lightly Active (light exercise/sports 1-3 days/week) Moderately Active (moderate exercise/sports 3-5 days/week) Very Active (hard exercise/sports 6-7 days a week) Extremely Active (very hard exercise/physical job)
Maintain Weight Mild Deficit (lose weight slowly) Moderate Deficit (lose weight) Aggressive Deficit (lose weight faster) Mild Surplus (gain weight slowly) Moderate Surplus (gain weight)

Your Estimated Carnivore Macros:

Basal Metabolic Rate (BMR): kcal/day

Total Daily Energy Expenditure (TDEE): kcal/day

Target Daily Calories: kcal/day

Macronutrient Breakdown:

Protein: grams ( kcal)

Fat: grams ( kcal)

Approximate Fat:Protein Ratio (by grams):

Note: Protein is set at approximately 0.8g per lb of body weight, with remaining calories allocated to fat. This is a common starting point for a high-fat carnivore diet. Adjust as needed based on hunger and satiety.

function calculateCarnivoreMacros() { // Get input values var weightLbs = parseFloat(document.getElementById('weightLbs').value); var heightInches = parseFloat(document.getElementById('heightInches').value); var ageYears = parseFloat(document.getElementById('ageYears').value); var genderMale = document.getElementById('genderMale').checked; var activityFactor = parseFloat(document.getElementById('activityLevel').value); var goalFactor = parseFloat(document.getElementById('goalType').value); // Validate inputs if (isNaN(weightLbs) || weightLbs <= 0 || isNaN(heightInches) || heightInches <= 0 || isNaN(ageYears) || ageYears <= 0) { document.getElementById('carnivoreResult').innerHTML = 'Please enter valid positive numbers for all fields.'; document.getElementById('carnivoreResult').style.display = 'block'; return; } // Convert to metric for BMR calculation var weightKg = weightLbs / 2.20462; var heightCm = heightInches * 2.54; // Calculate BMR (Mifflin-St Jeor Equation) var BMR; if (genderMale) { BMR = (10 * weightKg) + (6.25 * heightCm) – (5 * ageYears) + 5; } else { // Female BMR = (10 * weightKg) + (6.25 * heightCm) – (5 * ageYears) – 161; } // Calculate TDEE var TDEE = BMR * activityFactor; // Calculate Target Daily Calories based on goal var targetCalories = TDEE * goalFactor; // Macronutrient Calculation for Carnivore Diet // Protein: Approximately 0.8 grams per pound of body weight var proteinGrams = weightLbs * 0.8; var proteinCalories = proteinGrams * 4; // Fat: Remaining calories after protein var fatCalories = targetCalories – proteinCalories; var fatGrams = fatCalories / 9; // Handle cases where fat calories might be negative due to aggressive deficit or very high protein target if (fatCalories 0) ? (fatGrams / proteinGrams).toFixed(2) : 'N/A'; // Display results document.getElementById('resultBMR').innerText = BMR.toFixed(0); document.getElementById('resultTDEE').innerText = TDEE.toFixed(0); document.getElementById('resultTargetCalories').innerText = targetCalories.toFixed(0); document.getElementById('resultProteinGrams').innerText = proteinGrams.toFixed(0); document.getElementById('resultProteinCalories').innerText = proteinCalories.toFixed(0); document.getElementById('resultFatGrams').innerText = fatGrams.toFixed(0); document.getElementById('resultFatCalories').innerText = fatCalories.toFixed(0); document.getElementById('resultFatProteinRatio').innerText = fatProteinRatio; document.getElementById('carnivoreResult').style.display = 'block'; } /* Basic styling for the calculator – adjust as needed for your theme */ .carnivore-macro-calculator { background-color: #f9f9f9; border: 1px solid #ddd; padding: 20px; border-radius: 8px; max-width: 600px; margin: 20px auto; font-family: Arial, sans-serif; } .calculator-input-group { margin-bottom: 15px; } .calculator-input-group label { display: block; margin-bottom: 5px; font-weight: bold; } .calculator-input-group input[type="number"], .calculator-input-group select { width: calc(100% – 12px); padding: 8px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; } .calculator-input-group input[type="radio"] { margin-right: 5px; } button { background-color: #4CAF50; color: white; padding: 10px 15px; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; width: 100%; } button:hover { background-color: #45a049; } .calculator-result { margin-top: 20px; padding: 15px; border: 1px solid #e0e0e0; border-radius: 8px; background-color: #eaf7ea; display: none; /* Hidden by default */ } .calculator-result h3, .calculator-result h4 { color: #333; margin-top: 0; } .calculator-result p { margin-bottom: 8px; line-height: 1.4; } .calculator-result .note { font-size: 0.9em; color: #666; margin-top: 15px; }

Understanding Your Macros on a Carnivore Diet

The carnivore diet, an eating plan consisting exclusively of animal products, has gained popularity for its potential benefits in weight management, improved digestion, and reduced inflammation. While it simplifies food choices, understanding your macronutrient intake—specifically protein and fat—is crucial for optimizing results and ensuring you meet your body's energy needs.

What is the Carnivore Diet?

At its core, the carnivore diet is an elimination diet that removes all plant-based foods. This means focusing solely on meat, fish, eggs, and certain dairy products. Proponents suggest it can help address issues related to plant toxins, antinutrients, and carbohydrate sensitivity. However, like any restrictive diet, proper planning is key to success.

Why Calculate Macros for Carnivore?

Even though the food list is simple, the ratios of protein to fat can significantly impact your energy levels, satiety, and body composition goals. Unlike traditional diets where carbohydrates are a major energy source, on a carnivore diet, fat becomes the primary fuel. Too much protein without enough fat can lead to "protein poisoning" (rabbit starvation), while too little protein can result in muscle loss. This calculator helps you find a balanced starting point.

How This Calculator Works

Our Carnivore Diet Macro Calculator uses established scientific formulas to estimate your daily caloric and macronutrient needs:

  1. Basal Metabolic Rate (BMR): This is the number of calories your body burns at rest to maintain basic bodily functions (breathing, circulation, cell production). We use the Mifflin-St Jeor equation, which is widely recognized for its accuracy.
  2. Total Daily Energy Expenditure (TDEE): Your BMR is then multiplied by an activity factor to account for your daily physical activity, giving you an estimate of the total calories you burn in a day.
  3. Goal Adjustment: Based on your goal (maintain, lose, or gain weight), your TDEE is adjusted to create a caloric deficit or surplus.
  4. Carnivore Macro Allocation: For a typical high-fat carnivore approach, we set protein intake at approximately 0.8 grams per pound of your current body weight. The remaining calories are then allocated to fat, which is your primary energy source on this diet. This ratio helps ensure adequate protein for muscle maintenance and repair, while providing sufficient fat for energy and satiety.

Using Your Results

The results from this calculator provide a personalized starting point. Here's how to interpret them:

  • Target Daily Calories: This is your estimated caloric intake to achieve your chosen goal.
  • Protein (grams and kcal): Aim to consume this amount of protein daily. Protein is vital for muscle maintenance, repair, and various bodily functions.
  • Fat (grams and kcal): This is your primary energy source. Adjust your fat intake based on hunger, satiety, and energy levels. If you feel sluggish or overly hungry, you might need more fat.
  • Fat:Protein Ratio (by grams): This ratio gives you a quick overview of your macro balance. A higher ratio indicates a more fat-dominant approach, common in carnivore diets.

Important Considerations

  • Individual Variation: Metabolic rates can vary. Use these numbers as a guide and adjust based on how you feel, your energy levels, and your progress.
  • Listen to Your Body: On a carnivore diet, hunger and satiety signals often become clearer. Eat when hungry, stop when full.
  • Electrolytes: Ensure adequate intake of sodium, potassium, and magnesium, especially during the initial adaptation phase.
  • Hydration: Drink plenty of water.
  • Consult a Professional: Always consult with a healthcare provider or a registered dietitian before making significant dietary changes, especially if you have underlying health conditions.

By using this calculator, you can take a data-driven approach to your carnivore diet, helping you optimize your nutrition for better health and performance.

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