Pregnancy tools
Pregnancy Weight Gain Calculator
See evidence-informed total and remaining pregnancy weight-gain ranges for one baby or twins.
Open weight gain calculatorQuick answer
The calculator uses pre-pregnancy BMI, current weight, gestational age, and whether you are expecting one baby or twins. It gives a total range, not a personal prescription.
Frequently asked questions
Why does the calculator ask about twins?
Recommended total weight-gain ranges differ for twin and singleton pregnancies.
Is this a weekly weight target?
No. It shows an overall range; your care team can give advice tailored to your pregnancy.
This tool is for education and does not replace individual medical advice or care.