Weight Category Before Pregnancy |
BMI |
Total Weight Gain |
Underweight |
Less than 18.5 |
28–40 lb (12.5–18 kg) |
Normal weight |
18.5–24.9 |
25–35 lb (11.5–16 kg) |
Overweight |
25.0–29.9 |
15–25 lb (7.0–11.5 kg) |
Obese (includes severely obese) |
30.0 or higher |
11–20 lb (5–9 kg) |
BMI = body mass index, which is weight in kilograms divided by height in meters squared; kg = kilogram. |
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Adapted from Institute of Medicine: Report Brief: Weight Gain During Pregnancy: Reexamining the Guidelines. 2009. Accessed 8/13/19. |