Pregnancy Weight Gain
Track current gain against BMI-based pregnancy weight gain ranges by week and pregnancy type
Hit Calculate to see your weight-gain zone
Calculate to compare against your week
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Your explanation appears here
Healthy pregnancy weight gain varies by person. Bring rapid changes, swelling, weight loss or appetite concerns to your clinician.
Your plan appears after calculation
Project total gain from now to week 40 using an adjustable weekly pace.
Calculate your baseline first
It calculates pre-pregnancy BMI, selects a BMI-based total weight-gain range, estimates how much gain would usually be expected by the selected pregnancy week, and compares that with your current gain.
Recommended pregnancy weight gain differs by starting BMI because maternal energy stores and pregnancy risk patterns differ. The calculator uses the common underweight, healthy, overweight and obese BMI categories.
No. Use the result as a screening estimate. Rapid gain, weight loss, swelling, poor appetite, vomiting or any clinician-specific pregnancy plan should override this generic calculator.
Results are estimates generated locally in your browser from common pregnancy weight-gain guidance based on pre-pregnancy BMI and pregnancy type. They are for informational purposes only and are not medical, nutrition or obstetric advice. Pregnancy weight changes can reflect fluid shifts, fetal growth, placenta, amniotic fluid and maternal tissue changes. Always follow your prenatal clinician's guidance, especially for twins, high-risk pregnancy, diabetes, hypertension, swelling, vomiting, weight loss or eating-disorder history.
