Pregnancy Weight Gain Chart
REFRecommended Weight Gain (Total Pregnancy)
| Pre-Pregnancy BMI | Category | Total Gain (kg) | Total Gain (lbs) |
|---|---|---|---|
| Less than 18.5 | Underweight | 12.5-18 | 28-40 |
| 18.5-24.9 | Normal | 11.5-16 | 25-35 |
| 25-29.9 | Overweight | 7-11.5 | 15-25 |
| 30 and above | Obese | 5-9 | 11-20 |
Weight Gain by Trimester (Normal BMI)
| Trimester | Weeks | Expected Gain |
|---|---|---|
| First Trimester | 1-13 | 1-2 kg (2-4 lbs) |
| Second Trimester | 14-27 | 0.4-0.5 kg/week (1 lb/week) |
| Third Trimester | 28-40 | 0.4-0.5 kg/week (1 lb/week) |
Weight Gain Breakdown
Baby
3-3.5 kg (7-8 lbs)
Placenta
0.7 kg (1.5 lbs)
Amniotic fluid
0.9 kg (2 lbs)
Breast tissue
0.9 kg (2 lbs)
Blood supply
1.8 kg (4 lbs)
Fat stores & maternal tissue
2.7-3.6 kg (6-8 lbs)
Healthy Pregnancy Weight Gain
Weight gain recommendations are based on pre-pregnancy BMI. Gaining within recommended ranges supports baby's health and makes postpartum weight loss easier. First trimester: minimal gain (1-2kg). Second and third trimesters: steady gain of about 0.5kg/week for normal BMI. Multiples (twins/triplets) require higher gain. Consult healthcare provider for personalized guidance.
SourceInstitute of Medicine (IOM) & American College of Obstetricians