Animal Based Diet Calculator

Optimize your nutrition with our precise animal based diet calculator for macronutrients and calories.

What is an Animal Based Diet Calculator?

An animal based diet calculator is a specialized tool designed to help individuals determine their ideal daily caloric and macronutrient intake based on the principles of an animal-based diet. This dietary approach prioritizes nutrient-dense foods like meat, organs, fish, eggs, and raw dairy, while often including easily digestible, low-toxin carbohydrates like fruit and honey. Unlike a strict carnivore diet, it allows for more flexibility. This calculator removes the guesswork by providing specific targets for calories, protein, and fat, tailored to your unique body and lifestyle.

Anyone looking to optimize their health, improve body composition, or simplify their nutrition can benefit from using this tool. It’s especially useful for those transitioning to an animal-based or carnivore diet macros plan, ensuring they consume adequate energy and protein to support their goals, whether that’s weight loss, muscle gain, or maintenance.

The Animal Based Diet Calculator Formula and Explanation

This calculator uses established formulas to estimate your energy needs and then applies animal-based dietary principles to set your macronutrient targets. The process involves two main steps: calculating your energy expenditure and then partitioning that energy into protein and fat.

1. Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE)

First, we calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation, a widely accepted and accurate formula. BMR represents the calories your body burns at rest.

BMR = (10 * weight in kg) + (6.25 * height in cm) - (5 * age) + s (where ‘s’ is +5 for males and -161 for females)

Next, we determine your Total Daily Energy Expenditure (TDEE) by multiplying your BMR by an activity factor. TDEE is a more complete estimate of your total daily calorie needs.

TDEE = BMR * Activity Level Multiplier

Finally, this TDEE value is adjusted based on your goal (fat loss, maintenance, or muscle gain) to establish your final calorie target.

2. Macronutrient Calculation

On an animal-based diet, carbohydrates are typically low and come from sources like fruit and honey. This calculator focuses on the two primary macros: protein and fat.

• Protein: Your protein target is set based on your body weight, a crucial factor for muscle maintenance and satiety. A common recommendation is around 1 gram per pound of goal body weight.
• Fat: After accounting for the calories from protein (4 calories per gram), the remaining calories in your daily target are allocated to fat (9 calories per gram). This high fat intake is characteristic of an animal-based or keto macro calculator and provides sustained energy.

Variables Table

Description of variables used in the animal based diet calculator.

Variable	Meaning	Unit	Typical Range
BMR	Basal Metabolic Rate	Calories (kcal)	1200 – 2500
TDEE	Total Daily Energy Expenditure	Calories (kcal)	1500 – 4000+
Protein Intake	Grams of protein per unit of body weight	g/lb or g/kg	0.8-1.2 (g/lb) or 1.6-2.6 (g/kg)
Activity Multiplier	A factor representing physical activity	Unitless	1.2 – 1.9

Practical Examples

Example 1: Male Aiming for Fat Loss

A 40-year-old male weighs 200 lbs, is 5’10” (70 inches) tall, is lightly active, and wants to lose fat.

• Inputs: Age: 40, Gender: Male, Weight: 200 lbs, Height: 70 in, Activity: Lightly Active, Goal: Fat Loss, Protein: 1.0 g/lb.
• Calculation Steps:
  1. BMR is calculated to be approximately 1,838 kcal.
  2. TDEE is 1,838 * 1.375 = 2,527 kcal.
  3. Fat Loss Target is 2,527 * 0.80 = ~2,022 kcal.
  4. Protein goal is 200 lbs * 1.0 g/lb = 200g (800 kcal).
  5. Fat goal is (2022 – 800) / 9 = ~136g.
• Results: Target of ~2,022 Calories, 200g Protein, and 136g Fat per day.

Example 2: Female Aiming for Muscle Gain

A 28-year-old female weighs 135 lbs, is 5’6″ (66 inches) tall, is moderately active, and wants to gain muscle. She prefers to calculate her protein per kg.

• Inputs: Age: 28, Gender: Female, Weight: 135 lbs (61.2 kg), Height: 66 in, Activity: Moderately Active, Goal: Muscle Gain, Protein: 2.2 g/kg.
• Calculation Steps:
  1. BMR is calculated to be approximately 1,393 kcal.
  2. TDEE is 1,393 * 1.55 = 2,159 kcal.
  3. Muscle Gain Target is 2,159 * 1.10 = ~2,375 kcal.
  4. Protein goal is 61.2 kg * 2.2 g/kg = ~135g (540 kcal).
  5. Fat goal is (2375 – 540) / 9 = ~204g.
• Results: Target of ~2,375 Calories, 135g Protein, and 204g Fat per day. This shows the importance of using a reliable daily protein intake calculator.

How to Use This Animal Based Diet Calculator

1. Enter Your Personal Metrics: Input your current age, gender, weight, and height. Be sure to select the correct units (lbs/kg for weight, in/cm for height).
2. Select Your Activity Level: Choose the option that best describes your weekly exercise and lifestyle habits.
3. Define Your Goal: Select whether you want to lose fat, maintain your current weight, or gain muscle. This adjusts your final calorie target.
4. Set Your Protein Target: Use the recommended default or adjust your protein intake based on your preference. You can set this per pound or per kilogram of bodyweight.
5. Calculate and Analyze: Click the “Calculate” button. The calculator will display your target daily calories, as well as your BMR, TDEE, and recommended grams of protein and fat. The chart provides a visual breakdown of your macronutrient calories.
6. Copy and Save: Use the “Copy Results” button to save your personalized targets for easy reference.

Key Factors That Affect Animal-Based Diet Macros

Body Weight and Composition

Heavier individuals require more energy to function. Those with more muscle mass have a higher BMR than those with a higher fat percentage at the same weight. This is why a high protein diet plan is effective for building and maintaining muscle.

Activity Level

This is one of the most significant factors. The more active you are, the more calories you burn, and the higher your TDEE will be, requiring more food for energy.

Primary Goal

A caloric deficit is required for fat loss, while a caloric surplus is needed for muscle gain. Your goal directly dictates your final calorie budget.

Age

Metabolic rate naturally slows as we age, which is factored into the BMR calculation, slightly reducing calorie needs over time.

Gender

Men generally have a higher BMR than women due to differences in average body size, hormones, and muscle mass.

Protein Intake

Choosing a higher or lower protein ratio directly impacts the amount of fat in your diet, as they are the two main energy levers in this calculator. Adjusting your fat intake calculator settings can change this balance.

Frequently Asked Questions (FAQ)

1. How is this different from a standard macro calculator?

This animal based diet calculator is specifically tailored to an animal-focused eating style by primarily calculating protein and fat, assuming carbohydrate intake is minimal. Standard calculators often divide calories between protein, fat, and a significant amount of carbs.

2. Can I eat carbohydrates on this plan?

Yes. While this calculator focuses on protein and fat for its calculations, a true animal-based diet often includes low-toxin carbs like fruit and honey. You would consume these in addition to, or in place of, some of the calculated fat, depending on your total calorie goal.

3. How accurate is the BMR and TDEE calculation?

The formulas used (Mifflin-St Jeor and activity multipliers) are considered the industry standard for estimation. However, they are still estimates. The best approach is to use these results as a starting point and adjust based on your real-world progress after 2-3 weeks.

4. Why is protein intake based on body weight?

Basing protein on body weight ensures you consume enough to support critical bodily functions, including muscle repair and maintenance, regardless of whether you are in a calorie deficit or surplus.

5. What if I don’t know my body fat percentage?

That’s okay. This calculator uses the Mifflin-St Jeor equation, which does not require body fat percentage, making it accessible for everyone.

6. How often should I recalculate my macros?

You should recalculate your macros after every 10-15 lbs of weight change, or if your activity level changes significantly for a prolonged period.

7. Is a high-fat diet healthy?

On a low-carbohydrate, animal-based diet, fat becomes the body’s primary fuel source. Prioritizing high-quality animal fats (like tallow, butter, and fatty cuts of meat) is a cornerstone of this dietary approach and is very different from a standard high-fat diet that also includes processed foods and refined seed oils.

8. What’s a good starting point for my protein target?

A target of 1 gram of protein per pound of your goal body weight (or 2.2 grams per kg) is an excellent and widely recommended starting point for most people.