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Grams To Calories Calculator

Convert Macronutrient from Grams to Calories!

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The Grams to Calories Calculator measures the nutritional values of macros and converts them into calories. The ratio of macro in our food helps to determine the quality of our diet.

How Does This Grams to Calories Calculator Work?

For using this grams to calories calculator, follow the below-mentioned steps.


  • Enter the value of the Fats, Proteins, and Carbohydrates in the designated fields and then hit the calculate button.


  • Calories from carbs
  • Calories from protein
  • Calories from fat
  • Total Calories

Grams to Calories Conversion:

A calorie is a unit of energy and is used to describe the nutritional value of food. A calorie is the amount of energy required to raise the temperature of pure water to one degree Celsius. You may find the number of grams of each substance in the formula packing. We can convert the grams into calories to measure the energy value of each content in the substance. 

With the help of calorie conversion, you can:

  • Make your lifestyle healthy,
  • Maintain a healthy weight,
  • And over watch your energy requirements.

How Many Calories in a Gram of Carbohydrate?

For simple sugars, the number of calories are: 3.87 kcal

When we consider the complex carbohydrates, the number of calories are: 3.57 - 4.12 kcal per gram. To convert carb grams to calories, you can easily use a carbs to calories calculator.

How Many Calories in a Gram of Protein?

Proteins are very important for the structure and regulation of the body. The number of calories in one gram of proteins are 4 kcal.

For accurate measurement, you can easily use a protein to calories calculator.

How Many Calories in a Gram of Fat?

The number of calories in a gram of fat = 9 kcal You can see fats in the most powerful macronutrient and provide the maximum number of calories in a gram.

For accurate measurement, you can easily use a grams of fat to calories calculator.

Are Cal and kcal the Same?

Cal and kcal are the same but there are somehow two definitions which are as follows:

  • Cal is denoted to small calorie or gram calorie.
  • Kcal is denoted to kilocalorie or food calorie.

It is not wrong to say that converting grams to calories and grams to kilocalories is the same thing.

Grams to Calories Conversion Formula:

Grams into Calories Conversion Formulas for various ingredients like Fat, Proteins, and Carbohydrates are different. We need to multiply the different coefficients for converting grams into calories.  Grams to Calories Conversion Formula Grams into Calories Conversion Formulas for various nutrients can be difficult to convert especially when we are converting small quantities. It can be time-saving to use the grams to calories calculator for such conversions.

Gram to Calorie Conversion Table:

Convert the macro's nutritional values by the this calculator precisely.

Gram Calories
1g 7.7162 kcal
2g 15.43 kcal
3g 7.7162 kcal
4g 23.15 kcal
5g 30.86 kcal
6g 38.58 kcal
7g 46.3 kcal
8g 54.01 kcal
9g 61.73 kcal
10g 69.45 kcal
11g 77.16 kcal
12g 84.88 kcal
13g 92.59 kcal
14g 100.31 kcal
15g 108.03 kcal
16g 115.74 kcal
17g 123.46 kcal
18g 131.18 kcal
19g 138.89 kcal
20g 146.61 kcal
21g 154.32 kcal
22g 162.04 kcal
23g 169.76 kcal
24g 177.47 kcal
25g 185.19 kcal
26g 192.9 kcal
27g 200.62 kcal
28g 208.34 kcal
29g 216.05 kcal
30g 223.77 kcal
31g 231.49 kcal
32g 239.2 kcal
33g 246.92 kcal
34g 254.63 kcal
35g 262.35 kcal
36g 270.07 kcal
37g 277.78 kcal
38g 285.5 kcal
39g 293.21 kcal
40g 300.93 kcal
41g 308.65 kcal


Macronutrients in Food:

According to the WHO(World Health Organization), a person does need a certain amount of nutrients to live a normal life. The Macros calories per gram proportionality is necessary to function all the processes normally.

The three most important macronutrients are:

  • Fats
  • Protein
  • Carbohydrates

Definition and Conversion of Fats to Calories:

Fats are the macronutrients essential for our body and without them, we can’t absorb the vitamins. Fats are the most efficient macronutrient to provide us with energy.

You can use a fat to calories calculator or using the following formula for the conversion of the fats grams into the calories is:

Calories = Grams × 9

Definition and Conversion of Proteins to Calories:

Proteins are nutrients made up of amino acids, which are needed to make the body tissues and cells. The sources of proteins are plants and animals like (beef, mutton, dry fruits, etc.).

The formula for the conversion of the Protein grams into calories is:

Calories = Grams × 4  

Definition and Conversion of Carbohydrates to Calories:

Carbohydrates are the type of macronutrient that is converted to glucose and sugar by our body. The excessive carb-calorie ratio can disturb our blood sugar levels, so we need to check their consumption.  

Simply use a carbohydrates to calories calculator or use the following formula for converting the carbs grams to calories is:

Calories = Grams × 4


From the source of Macronutrients, Carbohydrates

From the source of Protein, Fat

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