Gestational Weight Gain Calculator
Calculate your target weight gain envelope week-by-week based on your pre-pregnancy BMI.
Where 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).
Enjoying SheTools?
SheTools is 100% free, runs locally in your browser, and has zero ads. If our tools helped your day or gave you peace of mind, support our independent atelier with a warm cup of coffee!
More from this collection
Period & Ovulation Cycle Tracker
Calculate your upcoming cycles, fertile ovulation window, and luteal PMS phases with clinical precision.
Week-by-Week Pregnancy Fruit Guide
Track your gestational progress with delightful fruit size comparisons, due date countdown, and maternal tips.
Hydration & Hormonal Water Retention Tracker
Daily fluid target adjusted for weight and menstrual/pregnancy phases with interactive glass counter.