Calculate Your Daily Macros
Find your estimated daily calorie and macronutrient targets, then see what a day of eating could actually look like.
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What does this mean?
Here's how your estimated daily target was calculated.
Make protein the easy part
You don't need to get all your protein from shakes and bars. Start with protein-rich whole foods, then use convenient options to help fill the gaps.
Spread your protein across the day rather than trying to squeeze it all into one meal.
Here's what a day could look like
Whole-food meals are portioned to your remaining target after a Chief shake and collagen bar. Product rows use per-serve label values. Breakfast + shake + lunch + bar + dinner add up to your daily target.
Eggs + Greek yoghurt
Eggs, Greek yoghurt, berries and a small serve of oats.
Whey protein shake CHIEF
1 serve (30g) mixed with water or milk.
Chicken + avocado bowl
Grilled chicken, avocado, large salad, extra virgin olive oil and a serve of rice or potato.
Steak + vegetables
Steak, plenty of vegetables and roast potato or sweet potato.
Beef snack CHIEF
Still hungry or short on protein? Add Chief Biltong (90 kcal, 18g protein) or a Chief Beef Bar (146 kcal, 18g protein). Not counted in the daily total below.
Three things that matter more than perfection
Make protein the anchor of your meals and snacks.
Build most of your diet around minimally processed, nutrient-dense foods.
Your calculated calories are a starting point. Adjust based on what happens to your weight, hunger and performance over time.
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How to Calculate Your Calories and Macros
Your calorie and macro targets depend on factors including your age, sex, height, weight, activity level and goal.
A macro calculator estimates your daily calorie requirement and then divides those calories between the three main macronutrients: protein, carbohydrates and fat.
You can calculate macros for fat loss, weight maintenance or muscle gain, and choose a balanced, higher-protein or lower-carbohydrate approach.
What Are Macros?
"Macros" is short for macronutrients. These are nutrients the body requires in relatively large amounts and that contribute to your overall energy intake.
Protein
Protein provides approximately 4 calories per gram. It supplies amino acids used by the body to build and maintain tissues, including skeletal muscle.
Protein-rich foods include:
- Beef
- Chicken
- Fish
- Eggs
- Greek yoghurt
- Cottage cheese
- Milk
- Whey protein
- Legumes
- Tofu and tempeh
A simple strategy is to build each main meal around a quality protein source first, then add vegetables, fruit, carbohydrates and fats around it.
Carbohydrates
Carbohydrates provide approximately 4 calories per gram and can provide readily available energy for exercise and daily activity.
Whole-food carbohydrate sources include:
- Fruit
- Potatoes and sweet potatoes
- Rice
- Oats
- Whole grains
- Legumes
- Vegetables
There is no single carbohydrate intake that is right for everyone. Someone training hard several days each week will generally have different requirements from someone who is mostly sedentary.
Fat
Fat provides approximately 9 calories per gram, making it the most energy-dense macronutrient.
Whole-food fat sources include:
- Extra virgin olive oil
- Avocado
- Nuts
- Seeds
- Eggs
- Oily fish
- Dairy
- Meat
Because fat contains more than twice as many calories per gram as protein or carbohydrate, portion size can have a significant impact on total calorie intake.
How Does a Calorie Calculator Work?
Step 1: Calculate your BMR
Your Basal Metabolic Rate (BMR) is an estimate of the amount of energy your body uses at rest.
A Harris-Benedict calculator uses your sex, age, height and weight to estimate resting energy expenditure.
Step 2: Estimate your maintenance calories
Your BMR is multiplied by an activity factor to estimate your Total Daily Energy Expenditure (TDEE), often referred to as your maintenance calories.
BMR × activity factor = estimated maintenance calories
Step 3: Adjust calories for your goal
For fat loss, a common starting point is to eat below estimated maintenance calories.
For maintenance, calorie intake is generally set around estimated daily energy expenditure.
For muscle gain, calories are often increased modestly above estimated maintenance.
These are starting points rather than fixed prescriptions and may need adjustment based on your real-world results.
Harris-Benedict Equation Explained
The Harris-Benedict equation is a widely known method for estimating resting energy expenditure. A commonly used version is the revised equation published by Roza and Shizgal in 1984.
Revised Harris-Benedict formula for men
BMR = 88.362 + (13.397 × weight in kg) + (4.799 × height in cm)
− (5.677 × age)
Revised Harris-Benedict formula for women
BMR = 447.593 + (9.247 × weight in kg) + (3.098 × height in cm)
− (4.330 × age)
The equation produces an estimate of resting energy expenditure. It cannot directly measure an individual's metabolism and does not fully account for differences in body composition or physiology.
Reference: Roza AM, Shizgal HM. The Harris Benedict equation reevaluated: resting energy requirements and the body cell mass. American Journal of Clinical Nutrition. 1984.
How Many Calories Should I Eat to Lose Weight?
Fat loss requires energy intake to remain below energy expenditure over time. This is commonly called a calorie deficit.
Rather than immediately cutting calories as low as possible, many people start with a moderate deficit below estimated maintenance calories.
Estimated maintenance calories: 2,500 calories/day
20% of 2,500 = 500 calories
2,500 − 500 = 2,000 calories/day
That does not mean 2,000 calories will be perfect for every person with a maintenance estimate of 2,500 calories. Use the result as a starting point and adjust according to your progress.
How Much Protein Should I Eat Per Day?
Protein requirements vary according to factors including body size, activity level, total calorie intake and training goals.
Research in resistance-training populations commonly supports protein intakes around 1.6 g per kilogram of body weight per day, with higher intakes sometimes used depending on the person and context.
Higher-protein approach
A higher-protein target may sit around 2.2 g of protein per kilogram of body weight.
80 × 2.2 = 176 g protein/day
Balanced approach
A balanced protein target may sit around 1.8 g protein per kilogram.
80 × 1.8 = 144 g protein/day
Lower-carbohydrate approach
A lower-carbohydrate approach may still keep protein high, for example around 2.0 g protein per kilogram.
80 × 2.0 = 160 g protein/day
These are practical examples rather than minimum dietary requirements or personalised medical recommendations.
Should I Spread Protein Across the Day?
You do not need to obsess over exact protein timing, but spreading protein across several meals can make a high daily target easier to achieve.
- Breakfast: 35–40 g
- Lunch: 40–45 g
- Snack or shake: 25–30 g
- Dinner: 45–50 g
Total daily protein intake remains particularly important. Perfectly equal distribution across meals is not required.
What Does 150–200g of Protein Actually Look Like?
High protein targets can sound difficult until they are translated into actual meals.
Breakfast
Eggs, high-protein Greek yoghurt and berries.
Mid-morning
A Chief Whey Protein shake can provide convenient complete dietary protein.
Lunch
Grilled chicken with a large salad, avocado and rice or potato depending on your carbohydrate target.
Afternoon
A Chief Collagen Protein Bar provides a convenient protein-containing snack when you are away from home or between meals.
Dinner
Steak with vegetables and potato or sweet potato.
Still short on protein?
Protein-rich snacks such as Chief Biltong or a Chief Beef Bar can help fill the remaining gap.
Whey Protein vs Collagen Protein: Which Counts Towards My Macros?
Both whey and collagen contain protein and therefore contribute to your overall protein intake, but their amino acid profiles are different.
Whey protein
Whey is a complete protein containing all nine essential amino acids and is naturally rich in leucine. It is therefore particularly useful when your goal is to increase high-quality complete dietary protein.
Collagen protein
Collagen is particularly rich in amino acids including glycine, proline and hydroxyproline. Its amino acid profile differs from complete proteins such as whey.
If your main objective is reaching a high-quality complete protein target, prioritise complete proteins such as meat, dairy, eggs and whey. Collagen can sit alongside these foods within your overall diet.
Do I Need to Track Calories Forever?
No. Tracking can be useful because it teaches you how much energy and protein your normal meals contain, but you do not necessarily need to track every meal indefinitely.
A simpler long-term framework can be:
- Prioritise protein at each meal.
- Build most meals around whole foods.
- Adjust carbohydrate intake according to activity.
- Include dietary fats while remembering they are energy dense.
- Watch your results over time.
How Do I Know If My Calorie Target Is Correct?
A calculator cannot know your exact energy expenditure. The most useful test is what happens when you follow the target consistently in the real world.
If fat loss is your goal, look at your average body-weight trend rather than reacting to a single weigh-in.
Short-term body weight can change because of:
- Hydration
- Food volume
- Carbohydrate intake
- Sodium intake
- Exercise
- Bowel contents
If your average weight does not change despite consistently following your plan, your actual maintenance calories may differ from the estimate.
Should I Eat the Same Calories on Training and Rest Days?
You can. For many people, keeping calorie intake relatively consistent is simpler.
Some active people prefer to eat more carbohydrate on demanding training days and somewhat less on rest days. What matters most is that your overall energy and nutrient intake supports your goal and activity level.
What Is the Best Macro Split for Fat Loss?
There is no single perfect percentage of protein, carbohydrate and fat for everyone.
A useful macro approach should:
- Create an appropriate calorie deficit.
- Provide adequate protein.
- Support training and recovery.
- Include foods you enjoy.
- Be realistic enough to follow consistently.
That is why many people choose between a balanced, higher-protein or lower-carbohydrate approach depending on preference and activity.
High Protein vs Low Carb: Which Is Better for Weight Loss?
Higher protein and lower carbohydrate are not mutually exclusive. A diet can include both.
Reducing carbohydrate is not inherently required for fat loss. A lower-carbohydrate approach is simply one way some people choose to structure their total calorie intake.
Higher protein serves a different purpose by increasing the proportion of the diet coming from protein-rich foods.
The best approach is generally the one that you can follow consistently while still supporting training, fibre intake and overall nutrition.
Can I Build Muscle While Losing Fat?
Some people can gain muscle while losing body fat, commonly called body recomposition.
The likelihood depends on factors including:
- Training history
- Starting body composition
- Resistance training
- Protein intake
- Size of the calorie deficit
- Sleep and recovery
If retaining or building muscle is important to you, combine an appropriate diet with progressive resistance training.
Calories vs Macros: Which Matters More?
Calories and macros answer different questions.
Calories represent the total amount of energy you are consuming. Macronutrients describe where those calories are coming from.
180 g protein × 4 calories = 720 calories
150 g carbohydrate × 4 calories = 600 calories
80 g fat × 9 calories = 720 calories
Total: 720 + 600 + 720 = 2,040 calories
In other words, your macronutrients add up to your total calorie intake.
Frequently Asked Questions About Calories and Macros
What is the most accurate macro calculator?
No equation can calculate your exact calorie needs from height, weight and age alone. Calculators such as Harris-Benedict provide estimates. Use the result as a starting target and adjust it using your real-world results.
Is the Harris-Benedict equation accurate?
The Harris-Benedict equation is an established method for estimating resting energy expenditure, but individual metabolic requirements vary. It should therefore be treated as an estimate rather than an exact measurement.
What is TDEE?
TDEE stands for Total Daily Energy Expenditure. It represents an estimate of the total energy your body uses during a day, including resting metabolism and activity.
What is BMR?
BMR stands for Basal Metabolic Rate. It estimates the amount of energy your body requires at rest to maintain basic physiological functions.
What calorie deficit should I use for weight loss?
There is no single deficit appropriate for everyone. A moderate deficit below estimated maintenance calories is often used as a starting point and can then be adjusted according to progress, hunger and performance.
How much protein do I need to build muscle?
Research in exercising adults commonly supports approximately 1.6 g/kg/day as an effective protein intake for supporting muscle, with higher intakes sometimes used depending on the person and circumstances.
How many calories are in protein?
Protein provides approximately 4 calories per gram.
How many calories are in carbohydrates?
Carbohydrates provide approximately 4 calories per gram.
How many calories are in fat?
Fat provides approximately 9 calories per gram.
Does alcohol count towards calories?
Yes. Alcohol provides approximately 7 calories per gram, although alcohol is not one of the three primary macronutrients typically used in macro calculators.
Should I eat more protein when trying to lose weight?
Higher protein intake can be useful during a calorie deficit, particularly alongside resistance training when maintaining lean mass is a priority.
Can I use a macro calculator for keto?
A lower-carbohydrate macro setting can be useful, but a general macro calculator is not necessarily designed to produce ketogenic targets.
How often should I recalculate my macros?
Consider recalculating after a meaningful change in body weight, activity level or goal, or if your existing target no longer appears to match your results.
Should I eat back the calories I burn during exercise?
Usually it is better not to automatically add every calorie estimated by a watch or exercise machine back into your intake, particularly if your calorie target already accounts for your normal activity level.
Can I use a macro calculator if I am pregnant or breastfeeding?
Pregnancy and breastfeeding involve additional energy and nutrient requirements that a general calculator may not adequately account for. Individual advice from an appropriately qualified health professional is more suitable.
Can teenagers use a macro calculator?
General adult macro calculators are not designed for children and adolescents, who have different energy and nutrient requirements associated with growth and development.
Start With the Numbers. Then Pay Attention to Your Body.
Calories and macros are useful because they turn a broad goal such as "lose fat" or "eat more protein" into something measurable.
But the calculator itself is not the goal.
Use your calculated targets as a starting point. Build most of your diet around real, nutrient-dense foods. Prioritise protein. Train consistently. Then adjust based on what happens over time.