Pregnancy Weight Gain Calculator

Your details

Twin ranges follow the IOM guidance and have no firm range for underweight women.
ft
in
lb
Leave matching your pre-pregnancy weight if you only want the total range.
lb
weeks
Recommended total gainOn track for this week
30lb
Lower end of total range25lb
Upper end of total range35lb
Pre-pregnancy BMI23.3kg/m²
Your gain so far10lb
On-track gain (this week), low6.7lb
On-track gain (this week), high11.4lb
Healthy weight this week, low146.7lb
Healthy weight this week, high151.4lb
20 weeks
  • End of 1st trimester
  • End of 2nd trimester
  • Due date

Aim to gain about 25, 35 lb over the whole pregnancy.

  • Your pre-pregnancy BMI of 23.3 places you in a range of 25, 35 lb total for a singleton pregnancy.
  • Most of this gain happens in the second and third trimesters, only about 1-4 lb is expected in the first.
  • So far you have gained about 10 lb; a typical on-track range for your week is roughly 6.7, 11.4 lb.

Next stepTrack your weight at each prenatal visit and discuss your trajectory with your obstetric provider.

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