How Many Calories for a 115-lb. Person?

You weight determines the number of calories you need to maintain that weight. With that number, you can calculate how many calories you need to gain or lose weight, too.

A slim woman is cooking in her kitchen. (Image: MIXA next/MIXA/Getty Images)

The Formula

Simple multiplication will give you the magic number. Multiply your current weight by 15 calories per pound if you are moderately active. This will be the number of calories you need to maintain your weight.

The Answer

A 115-lb. person needs approximately 1,752 calories a day to maintain weight. If you are relatively inactive, multiply by 10 calories per pound. This gives you 1,150 calories needed. To lose or gain 1 to 2 lbs. a week, you will need to decrease or increase your calories per day by 500 to 1,000. Women should not go below 1,200 calories a day, nor men below 1,500 calories a day, unless under medical supervision.

The Average

You don't have to consume 1,752 calories every single day to maintain weight. Your weight naturally fluctuates from day to day, and as long as you average 1,752 calories per day over the week, your body weight will remain about 115 lbs. For example, if you splurge and have 2,000 calories one day, consume fewer calories the next day or over the rest of the week.

Load Comments

Copyright © 2019 Leaf Group Ltd. Use of this web site constitutes acceptance of the LIVESTRONG.COM Terms of Use , Privacy Policy and Copyright Policy . The material appearing on LIVESTRONG.COM is for educational use only. It should not be used as a substitute for professional medical advice, diagnosis or treatment. LIVESTRONG is a registered trademark of the LIVESTRONG Foundation. The LIVESTRONG Foundation and LIVESTRONG.COM do not endorse any of the products or services that are advertised on the web site. Moreover, we do not select every advertiser or advertisement that appears on the web site-many of the advertisements are served by third party advertising companies.