Pregnancy weight gain refers to the gradual increase in your body weight during pregnancy to support your baby’s growth and development. The amount of weight you should gain depends on several factors, including your pre-pregnancy BMI (Body Mass Index), whether you're carrying one or multiple babies, and your stage of pregnancy.
Our Pregnancy Weight Gain Calculator helps you track your weight gain and ensures it falls within healthy ranges to minimize risks for both you and your baby.
The amount of weight you should gain depends on your pre-pregnancy BMI. Here are general guidelines:
Underweight (BMI < 18.5): 28 to 40 pounds (12.7 to 18.1 kg)
Normal weight (BMI 18.5-24.9): 25 to 35 pounds (11.3 to 15.9 kg)
Overweight (BMI 25-29.9): 15 to 25 pounds (6.8 to 11.3 kg)
Obese (BMI ≥ 30): 11 to 20 pounds (5 to 9 kg)
For twins, the recommendations are higher, with a range from 25 to 54 pounds (11 to 24.5 kg), depending on your BMI.
Based on your pre-pregnancy BMI, you’ll receive a recommended total weight gain range for the full term of your pregnancy. The calculator will compare this to your current weight gain and tell you if you are:
Within the recommended range: You're on track! Continue your balanced nutrition and exercise habits.
Above the recommended range: Gaining more weight than recommended can increase the risk of complications such as gestational diabetes. Focus on maintaining a healthy diet and moderate exercise with guidance from your healthcare provider.
Below the recommended range: Gaining too little weight may lead to complications like low birth weight. Ensure you're getting enough nutrients and consult with your doctor for guidance.
Here’s how weight gain typically progresses during pregnancy:
First trimester: Expect to gain 1-5 pounds (0.5-2 kg) or none at all, especially if experiencing morning sickness.
Second trimester: Gaining about 0.8 to 1 pound (0.35-0.45 kg) per week is typical.
Third trimester: Continue gaining about 0.8 to 1 pound per week.
If you're carrying twins, you’ll likely gain more weight in the second and third trimesters, averaging 1.5 pounds (0.7 kg) per week.
Maintaining a healthy weight gain during pregnancy is critical for both your health and your baby's. Too much or too little weight gain can increase the risk of:
Excessive weight gain:
Gestational diabetes
Hypertension or preeclampsia
Difficult delivery (C-section or complications)
Large-for-gestational-age baby (LGA)
Inadequate weight gain:
Preterm birth
Low birth weight baby
Feeding difficulties for your baby
Eat nutrient-dense foods: Focus on whole grains, lean proteins, fruits, vegetables, and healthy fats.
Stay active: Regular moderate exercise, such as walking or prenatal yoga, can help manage weight gain.
Consult your healthcare provider: Regular check-ins with your doctor or midwife ensure you stay on track.
1.How much weight should I gain during pregnancy?
Your weight gain depends on your pre-pregnancy BMI. Use our calculator to get personalized guidance based on your unique factors.
2. What if I gain too much weight during pregnancy?
Gaining too much weight can increase the risk of complications. Consult your healthcare provider for diet and exercise recommendations to manage your weight
3. What if I don’t gain enough weight?
Not gaining enough weight can pose risks for your baby, such as low birth weight. Ensure you’re eating enough nutrient-rich foods and speak to your healthcare provider if you’re concerned.
4. Is it safe to lose weight during pregnancy?
ntentional weight loss during pregnancy is not recommended unless under the direct supervision of your healthcare provider. Focus on maintaining a healthy, balanced diet.