Pregnancy Weight Gain Calculator
Calculate your recommended pregnancy weight gain based on Institute of Medicine guidelines. Track your progress and get personalized recommendations.
Calculate Your Pregnancy Weight Gain
Your Pregnancy Weight Gain Results
Enter your information to calculate pregnancy weight gain
Understanding Pregnancy Weight Gain
Healthy weight gain during pregnancy is essential for your baby's development and your own health. The Institute of Medicine provides evidence-based guidelines for optimal weight gain based on your pre-pregnancy BMI.
Institute of Medicine Guidelines
| Pre-pregnancy BMI | Category | Single Pregnancy | Twin Pregnancy |
|---|---|---|---|
| < 18.5 | Underweight | 28-40 lbs | N/A |
| 18.5 - 24.9 | Normal Weight | 25-35 lbs | 37-54 lbs |
| 25.0 - 29.9 | Overweight | 15-25 lbs | 31-50 lbs |
| ≥ 30.0 | Obese | 11-20 lbs | 25-42 lbs |
Weight Distribution During Pregnancy
Baby
7-8 poundsFetal weight at birth
Fat stores
6-8 poundsEnergy reserves for breastfeeding
Increased blood volume
3-4 poundsAdditional blood for mother and baby
Increased fluid volume
2-3 poundsExtra fluid in tissues
Enlarged breasts
1-3 poundsPreparation for breastfeeding
Amniotic fluid
2 poundsProtective fluid around baby
Placenta
1.5 poundsLife support system for baby
Enlarged uterus
2 poundsExpanded to accommodate baby
Trimester Guidelines
First Trimester
Second Trimester
Third Trimester
Essential Nutrients During Pregnancy
Folate/Folic Acid
Prevents birth defects. Found in leafy greens, citrus fruits, and fortified foods.
Calcium
Supports bone development. Found in dairy products, leafy greens, and fortified foods.
Iron
Prevents anemia. Found in lean meats, beans, and iron-fortified foods.
Protein
Essential for baby's growth. Found in lean meats, eggs, beans, and nuts.
Important Disclaimer: This calculator provides general guidelines based on Institute of Medicine recommendations. Individual needs may vary based on health conditions, multiple pregnancies, and other factors. Always consult with your healthcare provider for personalized guidance on pregnancy weight gain and nutrition. Regular prenatal care is essential for monitoring your health and your baby's development.
