Macro Calculator
Split your daily calories into protein, carbs, and fat — tuned to your goal and diet preference.
Your numbers
Fill in your details to see your personalized macro split.
Your daily macros
Protein
—%
— g
— kcal
Carbs
—%
— g
— kcal
Fat
—%
— g
— kcal
What each macro does
The three macronutrients each play a specific role.
4 kcal/g
Protein
Builds and repairs muscle. Keeps you full. Essential for fat loss without losing lean mass.
4 kcal/g
Carbs
Primary fuel for your brain and training. Higher needs = higher training intensity.
9 kcal/g
Fat
Supports hormones and nutrient absorption. Don't cut below 20% of calories.
Protein targets matter most. Aim for ~1.6–2.2 g/kg of body weight if you train. Carbs and fat can shift based on preference — both fuel you just fine.
Targets mean nothing if you can't hit them.
SlayCal snaps every meal and updates your protein, carb, and fat totals in real time — so hitting macros becomes automatic.
Free · 500 scan credits · No credit card