Pregnancy Weight Gain Calculator | Healthy Weight Guidelines

Pregnancy Weight Gain Calculator

Calculate your healthy weight gain during pregnancy based on Institute of Medicine guidelines

Your Information

US Units
Metric Units

Single Pregnancy

One baby

Twin Pregnancy

Two babies

Your Weight Gain Recommendations

Based on Institute of Medicine guidelines

Your Pre-pregnancy BMI
24.2
Normal Weight
Healthy BMI range: 18.5 – 24.9
Recommended Total Weight Gain
25-35 lbs
(11.3-15.9 kg)
For a single pregnancy

Weight Gain by Trimester

1
First Trimester (Weeks 1-13)
1-5 lbs (0.5-2.3 kg)
2
Second Trimester (Weeks 14-26)
12-14 lbs (5.4-6.4 kg)
3
Third Trimester (Weeks 27-40)
8-10 lbs (3.6-4.5 kg)

The Pregnancy Weight Gain Calculator provides estimates based on guidelines from the Institute of Medicine. Individual needs may vary based on your health and pregnancy progress.

Note: Recommendations are for full-term pregnancies. BMI categories: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25.0-29.9), Obese (>=30.0)