Enter the total calories and the calories per gram (cal/g) into the Calculator. The calculator will evaluate the Grams from Calories. 

Grams from Calories Formula

G = C / CPG


  • G is the Grams from Calories (grams)
  • C is the total calories
  • CPG is the calories per gram (cal/g)

To calculate Grams from Calories, divide the total calories by the unit calories per gram.

How to Calculate Grams from Calories?

The following steps outline how to calculate the Grams from Calories.

  1. First, determine the total calories. 
  2. Next, determine the calories per gram (cal/g). 
  3. Next, gather the formula from above = G = C / CPG.
  4. Finally, calculate the Grams from Calories.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total calories = 50

calories per gram (cal/g) = 20

Frequently Asked Questions

What is the significance of knowing the grams from calories?

Understanding the conversion of calories to grams helps in dietary planning and ensuring nutritional requirements are met, especially in calorie-controlled diets for weight management or specific health conditions.

Can this calculation be used for all types of food?

Yes, this calculation can be applied to any food item as long as you know the total calories and the specific calories per gram of the food in question. However, the nutritional value and composition can vary widely among different foods.

How does the calorie content in food affect energy levels?

Calories in food provide the energy that our bodies need to function. The amount and type of calories consumed can significantly affect energy levels, metabolism, and overall health. Balancing calorie intake with energy expenditure is crucial for maintaining optimal health.

Is there a difference between calories listed on food labels and calories used in scientific calculations?

Yes, the term “calorie” on food labels actually refers to kilocalories (kcal), which is the standard unit of energy used in nutrition. In scientific calculations, a calorie (cal) is a much smaller unit of energy. Therefore, 1 kcal on food labels equals 1,000 cal in scientific terms.