Pregnancy Weight Gain Calculator
View general weight-gain guidance based on prepregnancy BMI and pregnancy type.
Your results will appear here.
General total pregnancy range
- Prepregnancy BMI
- Weight change so far
- Approximate range by this week
Twin ranges are provisional population guidance. Week-by-week twin guidance is individualized, so only the total twin-pregnancy range is shown.
The underweight twin range is a CDC recommendation based on limited observational evidence; it was not included in the original IOM twin ranges.
The same general range covers all prepregnancy BMI values of 30 or higher; evidence is limited for higher obesity classes.
Population guidance is not a personal target or a judgment of pregnancy health. Weight recommendations can differ based on your history and care plan; discuss changes with a prenatal care professional.