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Calculating Calories and Fat Grams

To determine the number of calories and fat grams you need each day in order to either lose, maintain or gain weight, your health care provider or a registered dietitian. As a general guideline, to maintain your current weight, follow the 3-step formula below. Remember, everyone's body and metabolism are different, so these numbers could vary slightly for you.

1. Determine your estimated calorie needs in the chart below:

 

 

 

 Physical Activity Level

 

Gender

Age (years)

Inactive

Moderately Active

Active

Female

19-30

1,800-2,000

2,000-2,200

2,400

 

31-50

1,800

2,000

2,200

 

51+

1,600

1,800

2,000-2,200

 

 

 

 

 

Male

19-30

2,400-2,600

2,600-2,800

3,000

 

31-50

2,200-2,400

2,400-2,600

2,800-3,000

 

51+

2,000-2,200

2,200-2,400

2,400-2,800

 2. No more than 30% of calories should be from fat, so take the total calories and multiply by 30%.

____calories per day x 0.30 = ____ calories from fat per day.

3.  Because there are 9 calories in each gram of fat, take calories from fat per day and divide by 9.

____calories from fat per day divided by 9 = ____fat grams per day.

Remember, saturated fats should account for only 10% of the total fat grams eaten.

Calculating Calories and Fat Grams - WellSpan Health

Online Medical Reviewer: Horowitz, Diane, MD
Online Medical Reviewer: Poulson, Brittany, RD, CDE
Last Review Date: 2015-06-25T00:00:00
Last Modified Date: 2015-07-18T00:00:00
Posting Date: 2008-11-30T00:00:00
Published Date: 2015-07-18T00:00:00
Last Review Date: 2007-03-30T00:00:00
© 2015 WellSpan Health. All Rights Reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

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