Pregnancy Weight Gain Calculator
The Institute of Medicine publishes recommended total pregnancy weight-gain ranges based on your BMI before pregnancy.
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How this works
IOM guidance: Underweight 12.5–18 kg, Normal weight 11.5–16 kg, Overweight 7–11.5 kg, Obese 5–9 kg (singleton pregnancy); twin pregnancies have higher recommended ranges.
Medical disclaimer
This tool provides general health information based on published formulas and guidelines. It is not a medical diagnosis and does not replace advice from a qualified doctor. If you have a health concern, please consult a physician or book a consultation on IMCURE.
Frequently asked questions
What if I gain outside this range?
It happens often and isn't automatically a problem — discuss your specific pattern with your obstetrician at your regular check-ups.
