How much weight you should gain depends on your body mass index (BMI) before pregnancy. BMI is a measure of your weight in relation to your height.

Pre-pregnancy weightBMI (Kg/m2)Total weight gain range (kg)
Normal weight18.5 to 24.911.5 to 16
UnderweightLess than 18.512.5 to 18
Overweight25 to 29.97 to 11.5
Obese ( include all classes namely grade I, II & III)Equal / more than 305 to 9
  • Normally, a woman should gain 9-11 kg during her pregnancy.
  • After the first trimester, a pregnant woman gains around 2 kg every month or 0.5 kg per week.

Ref – Guidline MOs Cover.pmd (

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