Grams to Calories Conversion (g to kcal)

Grams to Calories Converter

Enter the weight in grams below to convert it to calories.

Result in Calories:

1 g = 7.716179 kcal

How to Convert Grams to Calories

To convert a measurement in grams to a measurement in calories, multiply the weight by the following conversion ratio: 7.716179 calories/gram.

Since one gram of body fat is equal to 7.716179 calories, you can use this simple formula to convert:

calories = grams × 7.716179

The weight in calories is equal to the weight in grams multiplied by 7.716179.

For example, here's how to convert 5 grams to calories using the formula above.

calories = (5 g × 7.716179) = 38.580896 kcal

How Many Calories Are in a Gram of Body Fat?

There are 7.716179 calories in a gram of body fat, which is why we use this value in the formula above.

1 g = 7.716179 kcal

Grams are a unit of weight, and calories are a unit of energy. Keep reading to learn more about each unit of measure.

What Is a Gram?

A gram is a unit of mass equal to 1/1,000 of a kilogram or 0.035274 ounces, and is equivalent to the mass of one cubic centimeter, or one milliliter, of water.

The gram, or gramme, is an SI unit of weight in the metric system. Grams can be abbreviated as g; for example, 1 gram can be written as 1 g.

Learn more about grams.

What Is a Calorie?

Converting calories is actually a conversion of energy burned by the body performing work rather than actual weight. When measuring the energy content in foods, the large calorie, or kilocalorie, is used, but it's often still just called a "calorie."

One calorie (large calorie) is equal to the heat needed to raise the temperature of one kilogram of water by 1 degree Celsius.^[1] You'll need to burn 3,500 calories more than you eat to lose one pound of weight.^[2]

Calories can be abbreviated as kcal; for example, 1 calorie can be written as 1 kcal.

Learn more about calories.

Gram to Calorie Conversion Table

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

Table showing various gram measurements converted to calories.

Grams

Calories

1 g

7.7162 kcal

2 g

15.43 kcal

3 g

23.15 kcal

4 g

30.86 kcal

5 g

38.58 kcal

6 g

46.3 kcal

7 g

54.01 kcal

8 g

61.73 kcal

9 g

69.45 kcal

10 g

77.16 kcal

11 g

84.88 kcal

12 g

92.59 kcal

13 g

100.31 kcal

14 g

108.03 kcal

15 g

115.74 kcal

16 g

123.46 kcal

17 g

131.18 kcal

18 g

138.89 kcal

19 g

146.61 kcal

20 g

154.32 kcal

21 g

162.04 kcal

22 g

169.76 kcal

23 g

177.47 kcal

24 g

185.19 kcal

25 g

192.9 kcal

26 g

200.62 kcal

27 g

208.34 kcal

28 g

216.05 kcal

29 g

223.77 kcal

30 g

231.49 kcal

31 g

239.2 kcal

32 g

246.92 kcal

33 g

254.63 kcal

34 g

262.35 kcal

35 g

270.07 kcal

36 g

277.78 kcal

37 g

285.5 kcal

38 g

293.21 kcal

39 g

300.93 kcal

40 g

308.65 kcal

References

Brazier, Yvette, How many calories do you need?, Medical News Today, https://www.medicalnewstoday.com/articles/263028
Guth, E., Healthy Weight Loss, JAMA, 2014, 312(9), 974. https://jamanetwork.com/journals/jama/fullarticle/1900513