How to Calculate Your Macros: A Step-by-Step Guide Using the Animal Supps Macro Calculator

You do not always have a nutritionist next to you.

But you still need to understand what works for your body.

If your goal is to build muscle, lose fat, maintain your weight, or finally stop guessing with your diet, learning how to calculate your macros is one of the most useful things you can do.

Macros are not just numbers for bodybuilders.

They are the structure behind your food.

Protein helps support muscle repair and growth.
Carbs help fuel energy and workouts.
Fats help support hormones, nutrient absorption, and overall health.

When you understand your macros, your diet starts making more sense.

You stop guessing.
You stop copying random meal plans.
You stop wondering why one person eats more carbs than you and still gets results.
You start learning what your body actually needs.

That is why we added a Macro Calculator inside the Animal Supps website.

It gives you a starting point for your daily calories, protein, carbs, and fats based on your body, activity level, and goal.

Here is how to use it and what to do with the information after you get your numbers.

What Are Macros?

Macros, short for macronutrients, are the nutrients your body needs in larger amounts.

The three main macros are:

Protein
Carbohydrates
Fats

Each macro provides calories:

Protein: 4 calories per gram
Carbs: 4 calories per gram
Fat: 9 calories per gram

That is why macro tracking works.

Your calories come from your macros.

So when you calculate protein, carbs, and fats, you are also building your daily calorie target.

Why You Should Learn Your Own Macros

A lot of people want results but have no idea what they are eating.

They say:

“I eat healthy.”
“I barely eat.”
“I eat a lot of protein.”
“I do not know why I am not losing weight.”
“I am training hard but not growing.”
“I think I need more carbs.”
“I think I need to cut carbs.”

But without numbers, it is mostly guessing.

Learning your macros gives you a starting point.

It does not mean you need to track forever.
It does not mean you need to be obsessive.
It does not mean every meal needs to be perfect.

It means you finally understand the basics of what your body is getting.

That matters whether you are trying to lose fat, build muscle, maintain, or simply eat with more intention.

Step 1: Open the Animal Supps Macro Calculator

Start by going to the Macro Calculator on the Animal Supps website.

You can find it under:

Resources → Macro Calculator

The calculator asks for basic information like sex, age, weight, height, activity level, goal, protein target, and BMR formula.

This information helps estimate your daily calorie needs and your macro breakdown.

Remember: this is an estimate.

It is a starting point.

Your real results will come from applying the numbers, tracking how your body responds, and making adjustments over time.

Step 2: Enter Your Basic Information

The calculator will ask for:

Sex
Age
Weight
Height

These details matter because your body size, sex, and age affect your estimated basal metabolic rate.

BMR stands for basal metabolic rate. It is the estimated number of calories your body burns at rest to keep basic functions running, such as breathing, circulation, and cell production.

This is not your full daily calorie burn.

It is only the starting point.

Your daily movement, workouts, steps, job, lifestyle, and training all add on top of that.

Step 3: Choose Your Activity Level

This is one of the most important steps.

Many people get their macros wrong because they overestimate their activity level.

Be honest here.

If you train hard 3 to 5 times per week, “moderate” may make sense.

If you sit most of the day and only train a little, your activity level may be lower than you think.

If you have a physical job, train frequently, walk a lot, and stay active outside the gym, your activity level may be higher.

Your activity level helps estimate your TDEE.

TDEE stands for total daily energy expenditure.

That is your estimated total calorie burn for the day, including your BMR plus daily activity.

This matters because your goal calories are usually based on your TDEE.

Step 4: Choose Your Goal

The calculator lets you choose your goal.

Common goals include:

Maintain
Build muscle
Burn fat

This changes your calorie target.

If your goal is to maintain, your calories are usually close to your estimated TDEE.

If your goal is to build muscle, your calories may be set slightly above maintenance.

If your goal is to lose fat, your calories may be set below maintenance.

This is the basic idea:

To build muscle, you usually need enough calories to support training and recovery.
To lose fat, you usually need a calorie deficit.
To maintain, you want to stay close to your daily energy needs.

The key is not choosing the most aggressive option.

The key is choosing the option you can actually follow.

Step 5: Choose How You Want to Set Your Target

Inside the Animal Supps Macro Calculator, you can choose how to set your calorie target.

You may see options like:

Calculated from activity level
Target weight
Target body-fat percentage
Manual calories

Here is what that means.

Calculated From Activity Level

This uses your estimated activity level to calculate a calorie target based on your goal.

This is the easiest option for most people.

Use this if you want a simple starting point.

Target Weight

This can be useful if you have a specific body weight goal.

The calculator uses that target to help anchor the macro calculation.

Target Body-Fat Percentage

This is more advanced.

It can be useful for people who know their body-fat percentage or have a realistic goal based on body composition.

If you do not know your body-fat percentage, you do not need to use this option.

Manual Calories

This lets you enter your own calorie target.

This is useful if you already know your maintenance calories, you are working with a coach, or you have been tracking long enough to know what intake works for you.

Step 6: Pick Your Protein Per Pound

Protein is usually set first.

Why?

Because protein is essential for muscle repair, growth, recovery, and body composition.

The calculator may let you choose your protein target per pound, such as:

1.0 g per lb
1.2 g per lb
1.5 g per lb

For many active people, a higher protein intake can make sense, especially when training hard, dieting, or trying to preserve muscle.

But more is not always automatically better.

Your protein target should fit your goal, digestion, appetite, and total calories.

If your protein is set very high, carbs and fats may decrease because total calories need to stay consistent.

That is why the calculator adjusts the full macro split.

Macros work together.

Changing one changes the others.

Step 7: Choose Your BMR Formula

The calculator may give you formula options such as Mifflin-St Jeor or Katch-McArdle.

Mifflin-St Jeor

This is one of the most common formulas used to estimate resting energy needs.

It uses sex, age, height, and weight.

This is a good default option for most people.

Katch-McArdle

This formula uses lean body mass, which means it requires body-fat information.

It may be useful if you know your body-fat percentage.

If you do not know your body fat, Mifflin-St Jeor is usually the simpler option.

The important thing to remember is that no formula is perfect.

Your body is not a calculator.

The formula gives you a starting point. Your results tell you what needs to change.

Step 8: Click Calculate

After entering your information, click Calculate.

The calculator will show numbers like:

BMR
Calories
Protein
Carbs
Fat
Calories from protein
Calories from carbs
Calories from fat

This is your starting macro plan.

For example, someone might get:

2,934 calories
190g protein
269g carbs
122g fat

Those numbers mean:

The person’s daily target is around 2,934 calories.
190 grams should come from protein.
269 grams should come from carbs.
122 grams should come from fats.

Again, this is not a final answer forever.

It is a starting point.

Step 9: Understand What Each Result Means

Calories

Calories are your total daily energy target.

This is the number that most directly affects weight gain, weight loss, or maintenance over time.

If you consistently eat above your needs, you are more likely to gain weight.

If you consistently eat below your needs, you are more likely to lose weight.

If you consistently eat around your needs, you are more likely to maintain.

Protein

Protein supports muscle repair, recovery, and lean mass.

This is especially important if you lift weights, train hard, or are trying to lose fat while keeping muscle.

Protein can also help with fullness, which makes it useful during dieting.

Carbs

Carbs are your body’s main fuel source for training.

If you lift, do cardio, play sports, work an active job, or train intensely, carbs can help support performance.

Carbs are not the enemy.

They are a tool.

The key is matching carbs to your activity level and goal.

Fats

Fats are important for hormones, cell structure, nutrient absorption, and overall health.

Do not cut fats too low just because you want faster results.

A smart macro plan includes enough fat to support health and make meals satisfying.

Step 10: Copy Your Results

The Animal Supps Macro Calculator has a Copy button.

Use it.

Copy your results and save them somewhere you can actually see them.

You can put them in:

Your notes app
A food tracking app
A spreadsheet
Your meal plan
Your coach check-in
Your phone screenshots
Your kitchen wall if you need to

The goal is not just to calculate once and forget.

The goal is to use the numbers.

Step 11: Use the Numbers to Build Your Meals

Now that you have your macros, the next step is turning them into food.

This is where most people get stuck.

Do not try to build the perfect day immediately.

Start with protein.

Ask:

How much protein do I need today?
How many meals do I usually eat?
How much protein should each meal have?

For example, if your target is 190g protein and you eat 4 times per day, that is around 47g protein per meal.

If that feels too high, you can use 5 protein moments instead:

Breakfast
Lunch
Snack
Dinner
Evening snack

That would be around 38g protein per meal or snack.

This is how macros become realistic.

You break the big number into smaller moments.

Step 12: Choose Foods That Match the Macro

Once you know your targets, you can choose foods that help you get there.

For protein, options may include:

Chicken
Lean beef
Eggs
Fish
Greek yogurt
Cottage cheese
Protein bars
Protein snacks
Protein coffee
Protein muffins
Ready-to-go meals
Protein powder when needed

For carbs, options may include:

Rice
Potatoes
Oats
Fruit
Creamy rice
Pasta
Bread
Cereal
Carb powders if needed

For fats, options may include:

Avocado
Olive oil
Nut butters
Nuts
Egg yolks
Salmon
Seeds

The goal is not to eat the same food every day.

The goal is to understand what role each food plays.

Step 13: Match Your Supplements to Your Macros

This is where Animal Supps can help.

Once you know your macro targets, it becomes easier to choose products that actually support your routine.

If you are low on protein, you may need protein powder, bars, ready-to-go protein snacks, protein coffee, or high-protein meals.

If you are low on carbs, creamy rice, carb powders, or easy carb sources may help.

If training feels flat, you may need better pre-workout nutrition, hydration, electrolytes, or carbs around training.

If digestion feels off, fiber, greens, probiotics, or digestive enzymes may help make your routine easier to follow.

Supplements should not replace your whole diet.

They should solve real problems in your routine.

That is the difference between buying random products and building a smarter stack.

Step 14: Track for 1 to 2 Weeks Before Changing Everything

This part is important.

Do not change your macros every day.

Your weight can fluctuate because of water, sodium, carbs, stress, sleep, hormones, digestion, soreness, and training.

If you react to every single scale change, you will never know what is working.

Instead, follow your macros consistently for 1 to 2 weeks.

Track:

Body weight trend
Energy
Workout performance
Hunger
Digestion
Sleep
Progress photos
Measurements
How your clothes fit

Then decide if you need to adjust.

The weekly trend matters more than one random morning.

Step 15: Adjust Based on Your Body’s Response

Your first macro calculation is not supposed to be perfect.

It is supposed to give you a place to start.

If your goal is fat loss and your weight is not moving after 2 weeks, you may need a small calorie decrease or more activity.

If your goal is muscle gain and your weight is not moving at all, you may need a small calorie increase.

If you feel weak, exhausted, and hungry all the time, your deficit may be too aggressive.

If you are gaining weight too quickly during a bulk, your surplus may be too high.

Smart adjustments are usually small.

You do not need to destroy the whole plan.

You need to fine-tune it.