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    Weight Gain During Pregnancy

    Weight gain during pregnancy varies from woman to woman. it also depends on body type. Talk with your healthcare provider about the amount of weight gain that's best for you. Also talk with your provider about diet and exercise during pregnancy.

    Recommendations for pregnancy weight gain by BMI

    The information in the chart below comes from the Institute of Medicine. 





    Total gain   


    Rate of gain in 2nd and 3rd      



     less than 18.5

     28-40 lbs

     1 (1-1.3) lbs/week

    Normal Weight


     25-35 lbs

     1 (0.8-1) lbs/week



     15-25 lbs

     0.6 (0.5-0.7) lbs/week


     greater than 30.0 

     11-20 lbs

     0.5 (0.4-0.6) lbs/week


    In most cases, total weight gain at the end of pregnancy is estimate below. The information comes from the March of Dimes.


    7.5 pounds

    Maternal energy stores
    (fat, protein, and other nutrients)

    7 pounds

    Fluid volume

    4 pounds

    Breast enlargement

    2 pounds


    2 pounds

    Amniotic fluid

    2 pounds


    1.5 pounds


    4 pounds

    Online Medical Reviewer: Freeborn, Donna, PhD, CNM, FNP
    Online Medical Reviewer: Sacks, Daniel, MD, FACOG
    Date Last Reviewed: 6/1/2018
    © 2000-2020 The StayWell Company, LLC. 800 Township Line Road, Yardley, PA 19067. 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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