MommyCare
Pregnancy Weight Gain Calculator
Track your healthy weight gain throughout pregnancy with personalized recommendations and visual progress chart
Calculate Your Weight Gain
Your Pregnancy Weight Results
Pre-pregnancy BMI
0
Category
Recommended Gain
0-0
lbs
Your Current Gain
0
Status
Trimester Weight Guide
Week 0
1st Trimester (weeks 1-13)
1-5 lbs
2nd Trimester (weeks 14-27)
1-2 lbs/week
3rd Trimester (weeks 28-40+)
1-2 lbs/week
Understanding Healthy Pregnancy Weight Gain
Gaining the right amount of weight during pregnancy helps your baby grow to a healthy size and makes it easier to lose the weight after delivery. Our calculator provides personalized recommendations based on your pre-pregnancy BMI and current week.
Where Does the Weight Go?
Pregnancy weight is distributed to support your baby's growth and your changing body:
- Baby: 7-8 pounds (3-3.5 kg)
- Placenta: 1-2 pounds (0.5-1 kg)
- Amniotic fluid: 2 pounds (1 kg)
- Uterus growth: 2 pounds (1 kg)
- Breast tissue: 2 pounds (1 kg)
- Blood volume: 4 pounds (2 kg)
- Fluid retention: 4 pounds (2 kg)
- Maternal fat stores: 6-8 pounds (3-4 kg)
BMI Categories and Recommendations
- Underweight (BMI < 18.5): 28-40 lbs (12.5-18 kg)
- Normal weight (BMI 18.5-24.9): 25-35 lbs (11.5-16 kg)
- Overweight (BMI 25-29.9): 15-25 lbs (7-11.5 kg)
- Obese (BMI ≥ 30): 11-20 lbs (5-9 kg)