ObGyn Intelligence — Evidence Matters
Gestational Weight Gain Calculator
Personalized weight gain targets by pre-pregnancy BMI and gestational age — based on IOM 2009 guidelines.
Evidence Base
Institute of Medicine (US); National Research Council (US). Weight Gain During Pregnancy: Reexamining the Guidelines. Washington DC: National Academies Press; 2009. Primary source for all weight gain targets in this tool.
ACOG Committee Opinion No. 548. Weight Gain During Pregnancy. Obstet Gynecol. 2013;121(1):210-212. Reaffirmed IOM 2009 targets as standard of care.
Deputy NP, et al. Gestational Weight Gain — United States, 2012–2014. MMWR. 2015;64(43):1215-1220. Only 32% of women gain within recommended range.
Goldstein RF, et al. Association of Gestational Weight Gain With Maternal and Infant Outcomes. JAMA. 2017;317(21):2207-2225. Meta-analysis: 1.3M pregnancies — outcomes by weight gain category.
