Calculate your recommended weight gain range based on pre-pregnancy BMI, current week, and whether you are expecting multiples.
Quick Answer:Normal-weight women should gain 25-35 lbs during pregnancy, mostly in the 2nd and 3rd trimesters at about 1 lb/week. Twin pregnancies typically require 37-54 lbs of total weight gain.
Expected Current Weight Gain
Calculating... lbs gained so far (expected)
Pre-Pregnancy BMI
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BMI Category
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Recommended Total Gain
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Remaining Gain
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Weekly Rate (2nd/3rd Tri)
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Trimester
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Weight gain during pregnancy is not just about calories -- it reflects the growth of your baby, placenta, amniotic fluid, and increased blood volume. Focus on nutrient-dense foods rather than calorie restriction. In the first trimester, you do not need extra calories. In the second trimester, add about 340 calories/day, and in the third, about 450 extra calories/day. Always discuss weight concerns with your OB-GYN, as individual needs vary significantly.
The recommended weight gain depends on your pre-pregnancy BMI. Underweight women (BMI under 18.5) should gain 28-40 lbs, normal weight women (BMI 18.5-24.9) should gain 25-35 lbs, overweight women (BMI 25-29.9) should gain 15-25 lbs, and obese women (BMI 30+) should gain 11-20 lbs. For twin pregnancies, add approximately 10-15 additional pounds to these ranges.
Most pregnancy weight gain occurs during the second and third trimesters. During the first trimester (weeks 1-13), women typically gain only 1-5 pounds total. In the second and third trimesters, the rate increases to about 1 pound per week for normal-weight women, or about 0.5 pounds per week for overweight women. The rate varies based on pre-pregnancy BMI and individual factors.
Yes, moderate exercise during pregnancy is generally safe and recommended for most women. The American College of Obstetricians and Gynecologists recommends at least 150 minutes of moderate-intensity aerobic activity per week during pregnancy. Activities like walking, swimming, prenatal yoga, and stationary cycling are excellent choices. Always consult your healthcare provider before starting or continuing an exercise program during pregnancy.