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Gestational Weight Gain (IOM Guidelines) Calculator

Recommended total gain from pre-pregnancy BMI (IOM 2009).

Recommends total gestational weight gain ranges based on pre-pregnancy BMI according to the Institute of Medicine (IOM) 2009 guidelines.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

BMI = weight/(height²); IOM category determines gain range

In depth

Recommends total gestational weight gain ranges based on pre-pregnancy BMI according to the Institute of Medicine (IOM) 2009 guidelines.