Pregnancy Weight Gain Calculator
The Pregnancy Weight Gain Calculator will recommend the ideal weight range for your pregnancy based on your height and weight before pregnancy. This calculator is based on the most recent guidelines for pregnancy weight gain issued by the Institute of Medicine (IOM) in May 2009.
| your height | feet | inches |
| your weight before pregnancy | pounds (lb) |
| your height | centimeters | |
| your weight before pregnancy | kilograms |
Caloric intake must be increased to ensure proper development of the fetus during pregnancy. The amount of weight gained varies among women. Insufficient weight gain can compromise the health of the fetus and cause preterm , or premature, birth. Likewise, excessive weight gain can pose risks to the mother and the fetus, cause labor complications, or increase the risk of having a Cesarean delivery, etc. Women who are overweight may choose to plan a healthy diet and exercise regimen to help control the amount of weight they gain.
Recommendations for Total Weight Gain During Pregnancy by Prepregnancy BMI*
| Prepregnancy BMI (kg/m2) |
Category | Total Weight Gain Range |
Total Weight Gain Range for Pregnancy with Twins |
| <18.5 | Underweight | 28-40 lbs | |
| 18.5-24.9 | Normal Weight | 25-35 lbs | 37-54 lbs |
| 25.0-29.9 | Overweight | 15-25 lbs | 31-50 lbs |
| >30.0 | Obese | 11-20 lbs | 25-42 lbs |
* Weight Gain During Pregnancy: Reexamining the Guidelines, The Institute of Medicine of the National Academies, May 28, 2009
