ACOG & IOM Clinical Standards
Gestational Weight Gain Calculator
Calculate your target weight gain envelope week-by-week based on your pre-pregnancy BMI.
Height (cm)165 cm
Pre-Pregnancy Weight60 kg
Pregnancy WeekWeek 20
Current Weight Today65 kg
Pre-Pregnancy BMI
22 kg/m²
NORMALWeek 20 Target Weight
62.9 – 65.5 kg
(+2.9 to +5.5 kg gain)Your Total Gain So Far
+5 kg
On TargetFull Term Total Target
+11.5 – +16 kg
Recommended healthy windowWhere Does the Weight Actually Go?
Pregnancy weight gain is not fat! At term (~12.5 kg average), it is composed of: Baby (~3.5 kg), Placenta (~0.8 kg), Amniotic Fluid (~1.0 kg), Uterine muscle growth (~1.0 kg), Maternal Blood Volume expansion (~1.5 kg), Breast tissue (~1.0 kg), Extracellular fluid (~1.5 kg), and Maternal nutrient reserves (~3.0 kg).
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