Ounces to Calories Conversion

Enter the weight in ounces below to get the value converted to calories.

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1 oz = 218.75 kcal
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How to Convert Ounces to Calories

To convert an ounce measurement to a calorie measurement, multiply the weight by the conversion ratio.

Since one ounce of body fat is equal to 218.75 calories, you can use this simple formula to convert:

calories = ounces × 218.75

The weight in calories is equal to the ounces multiplied by 218.75.

For example, here's how to convert 5 ounces to calories using the formula above.
5 oz = (5 × 218.75) = 1,093.75 kcal

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

Ounces

One ounce is a unit of mass/weight equal to 1/16 of a pound. The common ounce should not be confused with the troy ounce, which is equal to 1/12 of a troy pound.[1]

The ounce is a US customary and imperial unit of weight. Ounces can be abbreviated as oz; for example, 1 ounce can be written as 1 oz.

Calories

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.[2] You'll need to burn 3,500 calories more than you eat to lose one pound of weight.[3]

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

Ounce to Calorie Conversion Table

Ounce measurements converted to calories
Ounces Calories
1 oz 218.75 kcal
2 oz 437.5 kcal
3 oz 656.25 kcal
4 oz 875 kcal
5 oz 1,094 kcal
6 oz 1,313 kcal
7 oz 1,531 kcal
8 oz 1,750 kcal
9 oz 1,969 kcal
10 oz 2,188 kcal
11 oz 2,406 kcal
12 oz 2,625 kcal
13 oz 2,844 kcal
14 oz 3,063 kcal
15 oz 3,281 kcal
16 oz 3,500 kcal
17 oz 3,719 kcal
18 oz 3,938 kcal
19 oz 4,156 kcal
20 oz 4,375 kcal
21 oz 4,594 kcal
22 oz 4,813 kcal
23 oz 5,031 kcal
24 oz 5,250 kcal
25 oz 5,469 kcal
26 oz 5,688 kcal
27 oz 5,906 kcal
28 oz 6,125 kcal
29 oz 6,344 kcal
30 oz 6,563 kcal
31 oz 6,781 kcal
32 oz 7,000 kcal
33 oz 7,219 kcal
34 oz 7,438 kcal
35 oz 7,656 kcal
36 oz 7,875 kcal
37 oz 8,094 kcal
38 oz 8,313 kcal
39 oz 8,531 kcal
40 oz 8,750 kcal

References

  1. James Bucki, Troy Ounce vs. Ounce, The Spruce, https://www.thesprucecrafts.com/troy-ounce-vs-ounce-4588158
  2. Brazier, Yvette, How many calories do you need?, Medical News Today, https://www.medicalnewstoday.com/articles/263028
  3. U.S. Department of Agriculture, I want to lose a pound of weight. How many calories do I need to burn?, https://www.nal.usda.gov/fnic/i-want-lose-pound-weight-how-many-calories-do-i-need-burn

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