Pregnancy Weight Gain Calculator
Track Your Healthy Pregnancy Weight Gain
Calculate your recommended weight gain based on your pre-pregnancy BMI and track your progress throughout your pregnancy.
Your Pregnancy Weight Gain Recommendations
Your pre-pregnancy BMI: 22.5 (Normal weight)
Recommended total weight gain: 11.5-16 kg (25-35 pounds)
Recommended Weight Gain by Trimester
First Trimester
0.5-2 kg
(1-4.5 lbs)
Second Trimester
0.5 kg/week
(1 lb/week)
Third Trimester
0.5 kg/week
(1 lb/week)
Your Weight Gain Progress
0 kg
16 kg
Based on your current week, your recommended weight gain is approximately 2-3 kg
Why Pregnancy Weight Gain Matters
Gaining the right amount of weight during pregnancy supports your baby’s growth and development while keeping you healthy. Appropriate weight gain:
- Helps your baby reach a healthy size
- Reduces risk of preterm birth
- Decreases likelihood of pregnancy complications
- Makes it easier to return to your pre-pregnancy weight
Where Does the Weight Go?
Pregnancy weight distribution isn’t just fat – it supports your growing baby and bodily changes:
- Baby: 3-4 kg (7-9 pounds)
- Placenta: 0.7-1 kg (1.5-2 pounds)
- Amniotic fluid: 1 kg (2 pounds)
- Breast tissue: 1-1.5 kg (2-3 pounds)
- Blood supply: 1.5-2 kg (4-5 pounds)
- Uterus: 1-2 kg (2-4 pounds)
- Fat stores: 2.5-4 kg (6-9 pounds)
Frequently Asked Questions
What if I’m pregnant with twins?
Weight gain recommendations are different for multiple pregnancies. Generally, women with a normal BMI should gain 17-25 kg (37-54 pounds), overweight women 14-23 kg (31-50 pounds), and obese women 11-19 kg (25-42 pounds). Always consult with your healthcare provider for personalized recommendations.
What should I do if I’m gaining too much or too little?
If your weight gain is significantly outside the recommendations, discuss this with your healthcare provider. They can help adjust your diet and exercise plan. Don’t try to lose weight during pregnancy without medical supervision.
How does weight gain affect my baby?
Appropriate weight gain supports your baby’s development and reduces the risk of complications. Inadequate weight gain may lead to low birth weight, while excessive gain may result in a larger baby, potentially complicating delivery and increasing future health risks for your child.
Additional Pregnancy Resources
Access our complete library of pregnancy resources including nutrition guides, exercise tips, and week-by-week pregnancy updates.