Pregnancy Weight Gain
Find your recommended total and week-by-week weight gain during pregnancy based on pre-pregnancy BMI, free online.
About this calculator
The U.S. Institute of Medicine recommends total gain by pre-pregnancy BMI: underweight 12.5–18 kg, normal weight 11.5–16 kg, overweight 7–11.5 kg, obese 5–9 kg. After the first trimester (about 0.5–2 kg), gain is roughly steady each week. This is general information, not medical advice.