Ounces to Calories Converter
Enter the weight in ounces below to get the value converted to calories.
Result in Calories:
Do you want to convert calories to ounces?
How to Convert Ounces to Calories
Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.
To convert a measurement in ounces to a measurement in calories, multiply the weight by the following conversion ratio: 218.75 calories/ounce.
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 weight in ounces multiplied by 218.75.
How Many Calories Are in an Ounce of Body Fat?
There are 218.75 calories in an ounce of body fat, which is why we use this value in the formula above.
1 oz = 218.75 kcal
Ounces are a unit of weight, and calories are a unit of energy. Keep reading to learn more about each unit of measure.
What Is an Ounce?
One ounce is a unit of mass/weight equal to 1/16 of a pound or 28.349523 grams. 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.
Learn more about ounces.
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.[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.
Learn more about calories.
Ounce to Calorie Conversion Table
| 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
- James Bucki, Troy Ounce vs. Ounce, The Spruce, https://www.thesprucecrafts.com/troy-ounce-vs-ounce-4588158
- 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