Pregnancy Weight Gain Calculator

Track healthy weight gain throughout your pregnancy based on your pre-pregnancy BMI

Enter Your Details

BMI Categories for Pregnancy

  • Underweight (BMI < 18.5): 12.5-18 kg gain
  • Normal weight (BMI 18.5-24.9): 11.5-16 kg gain
  • Overweight (BMI 25-29.9): 7-11.5 kg gain
  • Obese (BMI ≥ 30): 5-9 kg gain

Your Pregnancy Weight Recommendations

Your BMI Category

BMI:

Total Recommended Gain

Weekly Gain (2nd/3rd Tri)

Your Current Status

1st Trimester 2nd Trimester 3rd Trimester

Weight Gain Timeline

1st Tri: 0.5-2 kg total

2nd Tri: ~0.5 kg/week

3rd Tri: ~0.5 kg/week

Healthy Weight Tips

Balanced nutrition

Regular moderate exercise

Adequate hydration

Understanding Pregnancy Weight Gain

Healthy weight gain during pregnancy supports your baby's growth and development while maintaining your own health. The right amount of weight gain:

  • Provides nutrients for fetal development
  • Prepares your body for breastfeeding
  • Reduces risk of complications like gestational diabetes or preterm birth
  • Helps with postpartum recovery

Your ideal weight gain depends on your pre-pregnancy Body Mass Index (BMI), which accounts for your height and weight.

Pregnancy weight is distributed throughout your body to support your growing baby:

  • Baby: 3-4 kg (25-30%)
  • Placenta: 0.7-1 kg (5-10%)
  • Amniotic fluid: 1 kg (5-10%)
  • Uterus growth: 1 kg (5-10%)
  • Breast tissue: 0.5-1.5 kg (5-10%)
  • Blood volume: 1.5-2 kg (10-15%)
  • Fluid retention: 1-2 kg (10-15%)
  • Fat stores: 2.5-4 kg (15-25%)

Nutrition

  • Focus on nutrient-dense foods (fruits, vegetables, whole grains)
  • Include lean proteins and healthy fats
  • Eat small, frequent meals to manage nausea
  • Stay hydrated with water

Activity

  • Engage in moderate exercise (walking, swimming, prenatal yoga)
  • Aim for 30 minutes most days
  • Listen to your body and adjust intensity
  • Pelvic floor exercises help with delivery and recovery

Important Note

This calculator provides general guidelines based on Institute of Medicine recommendations. Every pregnancy is unique - consult your healthcare provider for personalized advice, especially if you have multiple pregnancies, medical conditions, or other special circumstances.