How do you calculate macros for strength training?

First estimate maintenance calories, choose a goal, then split calories between protein, fat and carbs. The calculator gives a starting point that should be adjusted based on real progress.

How much protein should I eat per day?

For strength training, a common starting range is about 1.6 to 2.2 grams of protein per kilogram of body weight, depending on the goal and individual context.

How often should I recalculate my macros?

It is useful to reassess macros after two to four weeks, or after a clear change in body weight, performance, activity level or training goal.

Free tool

Macro Calculator for Strength Training

Estimate your calories and your protein, carbs and fat split to build a nutrition plan that matches your goal: lean muscle gain, bulking, maintenance or cutting.

Muscle-Building Macro Calculator

Estimate your calories, protein, carbs, and fats based on your goal.

SexAgeHeight (cm)Weight (kg)Activity levelGoal

Your starting targets

Estimated basal metabolic rate: 1,699 kcal / day
Estimated maintenance calories: 2,633 kcal / day
Target calories for your goal: 2,765 kcal / day
Protein: 150 g / day
Carbs: 389 g / day
Fats: 68 g / day

Calorie split

Protein : 600 kcal
Carbs : 1,557 kcal
Fats : 608 kcal

These results are starting reference points. They should be adjusted based on changes in weight, performance, recovery, and how you feel.

How to read the result

Protein provides a base to support muscle mass.
Fats should remain sufficient for general balance.
Carbs are adjusted based on remaining calories, the goal, and activity.
Results should be adjusted after 2 to 4 weeks based on progress.

Sources: Mifflin-St Jeor formula for estimating basal metabolic rate; muscle-building protein targets based on International Society of Sports Nutrition positions; calories per macro: protein 4 kcal/g, carbs 4 kcal/g, fats 9 kcal/g.

Why calculate macros for strength training?

Macros are the macronutrients that provide energy: protein, carbohydrates and fat. In strength training, tracking them helps connect nutrition to recovery, performance and changes in body composition.

You do not need gram-perfect accuracy, but a calculated target gives you a reliable structure. You know how much to eat, which nutrients to prioritize and how to adjust your plan if weight or performance stalls.

How to use the macro calculator

Enter your sex, age, height and weight to estimate your basal metabolic rate.
Choose the activity level that best matches your weekly routine.
Select your goal: maintenance, lean muscle gain, bulking or cutting.
Use the calories and macros for 2 to 4 weeks, then adjust based on results.

How to interpret protein, carbs and fat

Protein

Protein supports muscle growth and maintenance. It is usually the first macro to set in the split.

Carbs

Carbs fill the remaining calories and help support training intensity, especially when training volume is high.

Fat

Fat should stay high enough for overall balance. Avoid cutting it too aggressively for long periods.

Macro calculation FAQ

Are the calculator macros exact?

They are an estimate. Your real energy expenditure depends on activity, recovery, NEAT and training progress. Real-world tracking is still essential.

Which goal should I choose to build muscle?

Lean muscle gain is best if you want to limit fat gain. Bulking is more appropriate if you accept a larger calorie surplus.

Can I use this calculator for cutting?

Yes. Choose the cutting goal to get a moderate deficit, then adjust based on body weight, measurements and performance.