Macro Ratio Calculator

How This Calculation Works

Percentages refer to energy, not grams. Protein and carbs use 4 kcal/g; fat uses 9 kcal/g. Locks preserve percentages while other unlocked shares absorb changes.

Example

2,400 kcal at 25/50/25 gives 150 g protein, 300 g carbs and 66.666… g fat. Entering 150/300/67 g instead gives 2,403 kcal.

Energy uses the simplified 4/4/9 convention. Actual food labels may differ. FAO food energy methods.

Limitations

These tools calculate estimates or numerical allocations, not individualized nutrition advice. They do not assess medical needs or food quality. Pregnancy, breastfeeding, medical conditions and children need individual professional guidance.