Pregnancy Weight Gain Calculator
Uses your pre-pregnancy BMI to give the Institute of Medicine recommended total weight gain and the weekly rate for the second and third trimesters, with the expected gain by your current week.
Read the full guide to this tool
Results
Notes
- IOM ranges assume a single baby; twin pregnancies use higher targets.
- Most gain happens in the second and third trimesters — about 0.35–0.5 kg per week for a normal starting BMI.
- This is an educational estimate, not medical advice; consult a professional for decisions about your health.
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