| BMI Category | BMI Range | Singleton (lbs) | Twins (lbs) |
|---|---|---|---|
| Underweight | < 18.5 | 28-40 | 50-62 |
| Normal | 18.5 - 24.9 | 25-35 | 37-54 |
| Overweight | 25 - 29.9 | 15-25 | 31-50 |
| Obese | >= 30 | 11-20 | 25-42 |
This calculator provides estimates based on the Institute of Medicine (IOM) 2009 guidelines for gestational weight gain. Individual needs may vary significantly.
This is not medical advice. Weight gain during pregnancy is influenced by many factors including pre-existing conditions, maternal age, and individual health circumstances. Always work with your healthcare provider to determine the right weight gain goals for your pregnancy.
Triplet pregnancies use twin guidelines as IOM does not provide separate recommendations for higher-order multiples.