Calculator Inputs
The page stays single column overall, while the calculator fields use 3 columns on large screens, 2 on smaller screens, and 1 on mobile.
Formula Used
This calculator uses layered sports nutrition logic rather than a single fixed macro split.
- Unit conversion: pounds convert to kilograms by multiplying by 0.45359237. Inches convert to centimeters by multiplying by 2.54.
- BMR: Mifflin-St Jeor equation. Male = (10 × weight kg) + (6.25 × height cm) − (5 × age) + 5. Female = (10 × weight kg) + (6.25 × height cm) − (5 × age) − 161.
- TDEE: Total daily energy expenditure = BMR × activity factor.
- Goal calories: Target calories = TDEE × (1 + goal adjustment + custom adjustment).
- Protein: Protein grams = body weight kg × protein factor. The factor changes by sport focus, goal, and diet style. If body fat is entered, a lean mass protein floor can increase the final protein target.
- Fat and carbs: Balanced, high protein, and high carb modes assign a fat calorie share first. Low carb and ketogenic modes cap carbs first, then assign the remaining calories to fat.
- Macro calories: Protein = 4 kcal/g, carbs = 4 kcal/g, fat = 9 kcal/g.
- Per meal split: Macro grams per meal = daily macro grams ÷ meals per day.
How to Use This Calculator
Use these steps to build a practical daily sports nutrition target.
- Enter age, sex, body weight, and height.
- Add body fat if you know it. Leave it blank if unsure.
- Choose the activity level that best reflects your average training load.
- Select your main goal, such as fat loss, maintenance, recomp, or bulking.
- Pick the sport focus that best matches your training style.
- Choose a diet style to bias the macro distribution.
- Set meals per day to view an easy meal-by-meal macro split.
- Use the custom calorie adjustment only for fine tuning.
- Press Calculate Macros to show results above the form.
- Use the CSV or PDF buttons to save the current plan.
Example Data Table
These examples show how different athlete profiles can produce different calorie and macro targets.
| Athlete | Inputs | Goal | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|---|
| Strength Athlete | Male, 28, 78 kg, 180 cm, moderate | Maintenance | 2744 kcal | 148 g | 353 g | 82 g |
| Endurance Athlete | Female, 24, 60 kg, 167 cm, very active | Lean Bulk | 2586 kcal | 108 g | 410 g | 57 g |
| Hybrid Athlete | Male, 35, 92 kg, 178 cm, light, 22% body fat | Fat Loss | 2049 kcal | 212 g | 172 g | 57 g |
FAQs
These plain HTML answers cover the most common questions about macro planning for sports.
1) Is this calculator a medical nutrition prescription?
No. It estimates calorie and macro needs from standard equations and your settings. Medical conditions, medications, and therapeutic diets can change ideal targets.
2) Can I use it for cutting, maintenance, and bulking?
Yes. Select fat loss, maintenance, lean bulk, or mass gain. The calculator changes calories first, then rebuilds protein, carbs, and fats around that goal.
3) Should I use the same macros on rest days?
Usually yes for simplicity. Some athletes lower carbs on lighter days, but weekly calorie balance and consistent protein intake matter more than perfect day-to-day changes.
4) Why does protein increase for some settings?
Protein rises during fat loss, recomp, strength work, and higher protein plans because muscle repair and retention need stronger amino acid coverage.
5) What happens if I enter body fat percentage?
It remains optional. When entered, the calculator can raise the protein floor during fat loss or recomp phases by referencing estimated lean mass.
6) What do the CSV and PDF buttons export?
They export the current result summary. CSV is useful for tracking logs, while PDF is better for sharing, saving, or printing the macro plan.
7) What does custom calorie adjustment do?
A negative value deepens the deficit. A positive value adds more fuel. Keep changes modest unless you are following a qualified coaching or clinical plan.
8) How often should I recalculate my macros?
Review them weekly or whenever body weight, training load, or goals change. Recalculate sooner during intense blocks, cutting phases, or aggressive bulking periods.