IOM recommended weight gain by pre-pregnancy BMI category.
IOM 2009 total gain ranges by pre-pregnancy BMI (WHO categories: <18.5, 18.5-24.9, 25-29.9, ≥30). Twin ranges are provisional. Weight-gain goals are individualized by your obstetric provider.
No. Pregnancy Weight Gain Clinical is free, with no signup required, and nothing you enter leaves your browser.
Pregnancy Weight Gain Clinical is built on published formulas and reference ranges from established health sources. We revisit it periodically as guidance evolves; the "Last reviewed" date above shows when that last happened. If something looks wrong, tell us with the feedback button in the bottom-right corner.
No. Pregnancy Weight Gain Clinical gives you a general estimate based on the inputs you provide, not a diagnosis. Existing conditions, medications, and individual history all change what a number actually means for you. Treat this as a starting point for a conversation with a doctor or other qualified health professional, not a substitute for one.