A calorie is a unit that is used to measure energy. The Calorie you see on a food package is actually a kilocalorie, or 1,000 calories. A Calorie (kcal) is the amount of energy needed to raise the temperature of 1 kilogram of water 1 degree Celsius.
Then, how do you calculate the percentage of calories from carbohydrates?
To calculate the percentage of carbohydrate, take the grams of carbohydrate listed and multiply it by four. The result is the number of calories supplied by carbohydrate in that food. Divide this by the total calories and then multiply by 100 to convert the answer to a percent.
How do you calculate protein calories?
Determine the percentage of protein in a given food.
- Figure out how many grams of a protein a food contains. Divide that amount by the total calories in the food. Then multiply the sum by 100.
- For example, say a food contains 200 calories and 8 grams of protein. You would divide 200 by 8, giving you .25.
What is a KCAL to calorie?
What is the difference between calories and kilocalories? The "calorie" we refer to in food is actually kilocalorie. One (1) kilocalorie is the same as one (1) Calorie (upper case C). A kilocalorie is the amount of heat required to raise the temperature of 1 kilogram of water one degree Celsius.