How to use the Pregnancy Weight Gain Calculator
- 1 Enter the requested details.
- 2 Review the estimate and the limitations shown with it.
How the estimate works
For a singleton pregnancy, the calculator maps pre-pregnancy BMI to broad total-gain ranges: 28–40 lb (12.7–18.1 kg) if underweight, 25–35 lb (11.3–15.9 kg) in the healthy range, 15–25 lb (6.8–11.3 kg) if overweight, and 11–20 lb (5.0–9.1 kg) with obesity. These are population guidance ranges, not personalized advice; discuss pregnancy weight with a prenatal care professional. Source: CDC pregnancy weight guidance.
How to use this calculator
Enter the requested values and review the result alongside the limits of the estimate.
Important limitations
This result is for general information. Individual circumstances can change what is appropriate; consult a qualified professional when making health decisions.
Frequently asked questions
How does this calculator work?
For a singleton pregnancy, the calculator maps pre-pregnancy BMI to broad total-gain ranges: 28–40 lb (12.7–18.1 kg) if underweight, 25–35 lb (11.3–15.9 kg) in the healthy range, 15–25 lb (6.8–11.3 kg) if overweight, and 11–20 lb (5.0–9.1 kg) with obesity. These are population guidance ranges, not personalized advice; discuss pregnancy weight with a prenatal care professional. Source: [CDC pregnancy weight guidance](https://www.cdc.gov/maternal-infant-health/pregnancy-weight/index.html).
Is this a diagnosis or personalized advice?
No. This is an informational estimate and does not replace professional advice.
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