Pregnancy Weight Gain Calculator

Healthy weight-gain range by pre-pregnancy BMI

weeks of pregnancy (1–42)

Pregnancy Weight Gain Calculator

How much weight to gain in pregnancy depends mostly on your pre-pregnancy BMI. This calculator applies the widely used Institute of Medicine (IOM) 2009 guidelines for single pregnancies: enter your pre-pregnancy weight and height to get your BMI category and recommended total gain, and add your current week and weight to see the recommended range so far and whether you're on track. It is general guidance only — your doctor or midwife may advise a different target.

Based on IOM 2009 guidelines for single pregnancies. General information only — always follow your doctor or midwife.

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