BMI & Weight Tracker
Track your pregnancy weight gain with personalized guidelines
Get weekly pregnancy updates
Expert tips and milestones straight to your inbox.
Understanding BMI During Pregnancy
BMI is calculated using your pre-pregnancy weight and height. Your BMI category determines the recommended weight gain range based on IOM guidelines. Gaining the right amount supports your baby's development while reducing health risks.
Where Does the Weight Go?
By the end of pregnancy: baby (3–3.5 kg), placenta (0.5–1 kg), amniotic fluid (1 kg), uterine growth (1 kg), increased blood volume (1.5 kg), breast tissue (0.5–1.5 kg), fat stores (2.5–4 kg), and extra fluid (1–1.5 kg).