Pregnancy Weight Gain Calculator
Calculate healthy weight gain during pregnancy based on your pre-pregnancy BMI and current week.
Your Weight Gain
5.0 kg
Within healthy range
Total Recommended
11.5-16 kg
Expected at This Week
4.4 kg
Pre-pregnancy BMI
normal
Weekly Gain (2nd/3rd tri)
0.42 kg/week
Recommended Weight Gain Over Time
Weight Gain Guidelines
| BMI Category | Singleton | Twins |
|---|---|---|
| < 18.5 (Underweight) | 12.5-18 kg | 22.7-28.1 kg |
| 18.5-24.9 (Normal) | 11.5-16 kg | 16.8-24.5 kg |
| 25-29.9 (Overweight) | 7-11.5 kg | 14.1-22.7 kg |
| ≥ 30 (Obese) | 5-9 kg | 11.4-19.1 kg |
Why Weight Gain Matters
Appropriate weight gain supports your baby's healthy development and reduces risks of complications. Too little gain can lead to low birth weight, while excessive gain increases risks of gestational diabetes and delivery complications.
Where Does the Weight Go?
Baby: 3-4 kg, Placenta: 0.5-1 kg, Amniotic fluid: 1 kg, Uterus: 1 kg, Breasts: 0.5-1 kg, Blood volume: 1.5 kg, Fat stores: 2-4 kg, Fluid retention: 1-2 kg.
Healthy Weight Management
Focus on nutrient-dense foods rather than eating for two. Regular, moderate exercise is beneficial. Don't diet during pregnancy. Discuss concerns with your healthcare provider.