T Nation

Macronutrient Ratio

I have a quick question about macronutrient ratios. Is it a ratio of calories or grams? For example, if your going for a diet of 30/40/30 C/P/F, would 30% of total calories come from carbs or 30% of total grams?



Thanks in advance.

Calories. Reason being, fat is 9 calories per gram, while protein and carbs are 4. You can’t compare things when they are not on the same scale. The calorie methods puts 'em on on the same scale.

Macro ratios have to be measured in calories, not grams, because 1gm of F = 9kcal, but 1gm
of P or C = 4kcal. If you measure it using
grams, you’ll end up with a significantly
larger % of F than you want.

Calories

1g Protein or Carbohydrate = 4 calories

1g Fat = 9 calories

Figure out how many calories you need, then figure out how many calories of each macronutrient you need and then divide those calories by the appropriate conversion listed above.

Kudos for everyone! Your all correct!