Twin Pregnancy Weight Gain Calculator
Calculate healthy weight gain recommendations for twin pregnancy based on BMI
Calculate Twin Pregnancy Weight Gain
Pre-pregnancy Measurements
Current Pregnancy Status
Enter current pregnancy week (1-42)
For tracking your current progress
Example: Twin Pregnancy Weight Gain
Normal Weight Woman
Pre-pregnancy: Height 165cm, Weight 60kg
BMI: 22.0 (Normal weight)
Recommended total weight gain: 16.8-24.5 kg (37-54 lbs)
Weekly gain (2nd/3rd trimester): 0.75 kg (1.5 lbs)
At Week 32
Expected weight gain so far: 13.4-19.6 kg
Target weight range: 73.4-79.6 kg
Remaining weight to gain: 3.4-4.9 kg over 8 weeks
Twin Pregnancy Weight Gain by BMI
Nutrition for Twin Pregnancy
- • 1st trimester: +300 kcal/day per baby
- • 2nd trimester: +340 kcal/day per baby
- • 3rd trimester: +452 kcal/day per baby
- • Increased folic acid
- • Extra calcium
- • More protein
- • Iron supplementation
Twin Pregnancy Health Tips
Monitor weight weekly at same time
Exercise 150 minutes per week (as approved by doctor)
Eat frequent small meals
Stay hydrated with plenty of water
Regular prenatal checkups are critical
Understanding Twin Pregnancy Weight Gain
Why Different Guidelines for Twins?
Twin pregnancies require higher weight gain because you're supporting the growth and development of two babies. The additional weight comes from extra amniotic fluid, larger placenta(s), increased blood volume, and the babies themselves.
Components of Weight Gain
- •Two babies (average 5-7 lbs each)
- •Extra amniotic fluid
- •Larger placenta(s)
- •Increased blood volume (50% more)
- •Breast tissue growth
- •Maternal fat stores
Risks of Inadequate or Excessive Gain
Too Little Weight Gain
- • Low birth weight babies
- • Preterm delivery
- • Maternal anemia
- • Poor fetal development
Too Much Weight Gain
- • Gestational diabetes
- • Preeclampsia
- • Increased C-section risk
- • Postpartum weight retention
Important: Twin pregnancies are automatically considered high-risk. Regular monitoring by maternal-fetal medicine specialists is recommended.