Example Data Table
| Profile |
Weight |
Activity |
Surplus |
Target Calories |
Protein |
Carbs |
Fat |
| Male, 25, 175 cm |
75 kg |
Moderate |
10% |
About 3,047 kcal |
165 g |
397 g |
58 g |
| Female, 28, 165 cm |
60 kg |
Light |
8% |
About 2,093 kcal |
132 g |
273 g |
46 g |
| Male, 32, 180 cm |
88 kg |
Hard |
12% |
About 3,840 kcal |
194 g |
500 g |
68 g |
Formula Used
BMR: Mifflin-St Jeor method is used.
Male BMR = 10 × weight kg + 6.25 × height cm - 5 × age + 5
Female BMR = 10 × weight kg + 6.25 × height cm - 5 × age - 161
TDEE: BMR × activity multiplier
Lean bulk calories: TDEE + selected surplus percentage
Protein: body weight in pounds × protein grams per pound
Fat: body weight in pounds × fat grams per pound
Carbs: (target calories - protein calories - fat calories) ÷ 4
How to Use This Calculator
- Enter your age, sex, height, and current body weight.
- Select the activity level that matches your weekly routine.
- Choose a small calorie surplus for lean muscle gain.
- Set protein and fat targets per pound of body weight.
- Add meals per day to see simple meal portions.
- Use carb timing to plan training window carbohydrates.
- Press calculate to show results above the form.
- Download CSV or PDF for records and meal planning.
Lean Bulking Guide
What Lean Bulking Means
Lean bulking is a controlled way to gain muscle. The goal is not rapid scale weight. The goal is slow growth with limited fat gain. A small calorie surplus gives your body extra energy. That energy supports hard training, recovery, and new muscle tissue. This calculator helps you set that surplus with clear macro targets.
Why Calories Matter
Muscle gain needs enough total food. If calories stay too low, strength often stalls. Recovery also suffers. A lean bulk usually uses a modest surplus. Many lifters start near five to fifteen percent above maintenance. This range can support progress without pushing body fat too fast.
Protein, Carbs, and Fat
Protein gives amino acids for muscle repair. A common target is close to one gram per pound of body weight. Fat supports hormones and basic health. Carbs fill the remaining calories. They also fuel lifting volume. Higher carb intake can help heavy sessions feel better.
Using Training Feedback
Your best target is not only a formula. It also depends on your weekly feedback. Track body weight, waist size, gym performance, sleep, and appetite. If weight does not move after two weeks, add a small amount of calories. If waist size rises too fast, reduce the surplus.
Smart Meal Planning
Spread protein across several meals. Place more carbs before and after training if performance matters. Keep meals simple. Use foods you can repeat. Good plans are easy to follow. A steady plan beats a perfect plan that only lasts three days.
Adjusting Over Time
Recalculate when your weight changes. Maintenance calories rise as body mass increases. Training volume may also change. Review your target every few weeks. Make small changes. This keeps the bulk clean, measured, and useful for long-term muscle gain.
FAQs
1. What is a lean bulk macro calculator?
It estimates calories, protein, carbs, and fat for slow muscle gain. It uses body data, activity, and a chosen surplus.
2. What surplus should I choose?
Many users start with five to fifteen percent above maintenance. Use a lower surplus if you gain fat quickly.
3. How much protein should I use?
A practical target is 0.8 to 1.1 grams per pound. Higher targets may help during stricter food control.
4. Why are carbs calculated last?
Protein and fat are set first. Carbs then fill the remaining calories because they mainly support training energy.
5. Can beginners use this calculator?
Yes. Beginners can use it to avoid overeating. Start with modest calories and review progress every two weeks.
6. How often should I update macros?
Update macros when body weight changes meaningfully. A review every two to four weeks works well for most users.
7. Should I eat the same calories daily?
You can. Some lifters prefer higher carbs on training days. Weekly calorie consistency matters most for progress.
8. Is the PDF download generated on the server?
Yes. The page creates a simple PDF summary from your submitted result without needing an external library.