Prepregnancy weight category	Recommended total weight gain range
Underweight (BMI < 18.5 kg per m2)	28 to 40 lb (13 to 18 kg)
Normal weight (BMI 18.5 to 24.9 kg per m2)	25 to 35 lb (11 to 16 kg)
Overweight (BMI 25.0 to 29.9 kg per m2)	15 to 25 lb (7 to 11 kg)
Obese (BMI ≥ 30.0 kg per m2)	11 to 20 lb (5 to 9 kg)