# what is the best way to calculate carbohydrate and proteins?

how do you calculate the carbs. in a serving of a food determing how much of a % is of carbohydrate?

## Answers (4)

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0

Carbohydrates and proteins both have about 4 calories per gram, fat has 9 and alcohol 7.

Let's say, you have a food and know that it contains 10 grams of carbs, 3 grams of protein and 2 grams of fat.

10 x 4 = 40 calories from carbs

3 x 4 = 12 calories from protein

2 x 9 = 18 calories from fat

This food has a total of 70 calories.

To determine the percentage of carbohydrates of the total calories:

40 (calories from carbs) x 100 divided by 70 (total calories) = 57 %.

Hope that answered your question.

Let's say, you have a food and know that it contains 10 grams of carbs, 3 grams of protein and 2 grams of fat.

10 x 4 = 40 calories from carbs

3 x 4 = 12 calories from protein

2 x 9 = 18 calories from fat

This food has a total of 70 calories.

To determine the percentage of carbohydrates of the total calories:

40 (calories from carbs) x 100 divided by 70 (total calories) = 57 %.

Hope that answered your question.

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Karin's answer is right on point. Just keep in mind that carbs come from both simple sugars (glucose, fructose, maltose) and from complex carbs. The complex carbs take a bit longer to digest, so the impact on blood sugar will be a bit delayed. 4 calories/gram is an estimate, but it works well in calculations. Likewise with protein (4 cal/gr) and fat (9cal/gr). You can easily estimate the % of total calories from each of these nutrients with a little simple mathematics.

Take care.

Take care.

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Hi Stephanie!

You may easily calculate carb's and proteins using "New American Plate". This includes 1/2 plate of vegetables, 1/4 plate of meat, and 1/4 plate of starch.

You can go to the MyPyramid Web site (www.mypyramid.gov)

With regards, Miroslava.

You may easily calculate carb's and proteins using "New American Plate". This includes 1/2 plate of vegetables, 1/4 plate of meat, and 1/4 plate of starch.

You can go to the MyPyramid Web site (www.mypyramid.gov)

With regards, Miroslava.

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