Healthy weight gain in pregnancy

A healthy weight gain during pregnancy is guided by your Body Mass Index (a calculation derived from your weight and height) before pregnancy:

  • BMI <18.5 between 28-40 lbs (13-18kg)
  • BMI 18.5-24.9 between 25-35lbs (11-16kg)
  • BMI 25 – 29.9 between 15-25lbs (7-11kg)
  • BMI >30  between 11-20 lbs (5-9kg)

The recommended weight gain for women expecting twins is:

  • BMI 18.5-24.9 between 37-54 lbs (16.8-24.5kg)
  • BMI 25-29.9 between 31-50 lbs (14.1-22.7kg)
  • BMI >30 between 25-42 lbs (11.3-19.1kg)