Enter the total number of carbs (grams) into the calculator to determine the Energy from Carbs. 

Energy from Carbs Formula

The following equation is used to calculate the Energy from Carbs. 

E = C*4

Variables:

  • Where E is the Energy from Carbs (kcal)
  • C is the total number of carbs (grams) 

To calculate energy from carbs, multiply the carbohydrates in grams by 4.

How to Calculate Energy from Carbs?

The following two example problems outline the steps and information needed in order to calculate the Energy from Carbs.

Example Problem #1:

  • First, determine the total number of carbs (grams). In this example, the total number of carbs (grams) is measured to be 4.
  • Finally, calculate the Energy from Carbs using the formula above: 

E = C*4

Inserting the values from above and solving the equation with the imputed values gives: 

E = 4*4 = 16 (kcal)

FAQ

What is the significance of the number 4 in the Energy from Carbs formula?

The number 4 in the Energy from Carbs formula represents the average number of calories provided by a gram of carbohydrates. This is a standardized value used in nutritional science to estimate the energy content of carbohydrates in food.

Can the Energy from Carbs formula be used for all types of carbohydrates?

Yes, the formula can be applied to all types of digestible carbohydrates, including sugars and starches. However, it does not account for fiber, which is a type of carbohydrate that the human body cannot digest for energy.

How does the energy from carbohydrates compare to that from proteins or fats?

Carbohydrates and proteins both provide about 4 calories per gram, while fats are more energy-dense, providing about 9 calories per gram. This makes fats a more concentrated source of energy compared to carbohydrates and proteins.