Calculate Your Daily Macro Split
Example Data Table
| Profile | Calories | Protein | Carbs | Fat | Meals |
|---|---|---|---|---|---|
| Fat loss balanced | 2,100 kcal | 160 g | 209 g | 58 g | 4 |
| Maintenance balanced | 2,500 kcal | 170 g | 266 g | 69 g | 4 |
| High protein cut | 2,200 kcal | 190 g | 201 g | 60 g | 5 |
| Lean gain endurance | 2,850 kcal | 155 g | 392 g | 63 g | 5 |
Formula Used
BMR: The calculator estimates basal metabolic rate with the Mifflin-St Jeor equation. For men: 10 × kg + 6.25 × cm − 5 × age + 5. For women: 10 × kg + 6.25 × cm − 5 × age − 161.
TDEE: Total daily energy expenditure equals BMR × activity factor. This estimates maintenance calories before applying any goal adjustment.
Goal calories: The tool multiplies TDEE by a goal factor. Aggressive loss uses 0.75, fat loss 0.85, maintenance 1.00, lean gain 1.10, and muscle gain 1.15.
Macro calories: Protein and carbohydrates each provide 4 kcal per gram. Fat provides 9 kcal per gram. The calculator converts grams to calories and then calculates macro percentages.
Automatic carbs: If carbs use remaining calories, the equation is (target calories − protein calories − fat calories) ÷ 4.
How to Use This Calculator
- Choose metric or imperial units, then enter age, weight, height, and sex.
- Select your activity level and your current goal, such as fat loss or lean gain.
- Pick estimated calories or enter a manual calorie target from your coach or nutrition plan.
- Choose a preset for a quick starting point, or customize protein, fat, and carbohydrate methods individually.
- Enter meals per day to see per-meal macro targets that support meal planning.
- Click the calculate button. Your result appears above the form under the header section.
- Use the export buttons to download the result as a CSV file or a PDF report.
- Adjust the settings and compare outcomes until the macro split matches your preferences and training demands.
Frequently Asked Questions
1. What is a macro split?
A macro split is the daily balance of protein, carbohydrates, and fat in your eating plan. It helps align calorie intake with recovery, performance, body composition, and food preference.
2. Is the calorie estimate exact?
No. It is a practical estimate based on standard equations and activity multipliers. Actual needs vary with training volume, sleep, stress, body composition, medication, and daily movement.
3. Should I use automatic carbs or manual carbs?
Automatic carbs are useful when protein and fat are fixed first. Manual carbs help when you follow a specific nutrition style, such as low-carb, endurance fueling, or higher carbohydrate training days.
4. How much protein should I choose?
Many active adults use roughly 1.6 to 2.2 grams per kilogram. Higher intakes are common during fat loss, while moderate intakes may suit maintenance or endurance-focused phases.
5. Why does the calorie gap matter?
The calorie gap shows whether your selected macros exactly match the target calories. A positive or negative gap means your chosen macro rules create fewer or more calories than planned.
6. Can I use this for meal planning?
Yes. The calculator divides daily macros by your meal count, giving simple per-meal targets. That makes it easier to structure breakfasts, lunches, dinners, and snacks.
7. Does fiber count as carbs?
Fiber comes from carbohydrate-containing foods, but nutrition labels may handle it differently by region. This calculator keeps fiber as a separate planning target instead of changing carb totals.
8. Should I change my macros every week?
Only if progress stalls or training demands change. Review body weight trends, energy, gym performance, recovery, and hunger for two or more weeks before making larger adjustments.