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Pregnancy Weight Gain
+5.0 kg gained by week 20 · on track
Generated
7/8/2026
On track
+5.0 kg gained
Total target by week 40: 11.5-16 kg(Pre-preg BMI: 22.0 — Normal)
Recommended weight-gain curve
Green band = IOM 2009 recommended range. Pink dot = your current gain at week 20.
Step-by-step calculation
Formula
Pre-pregnancy BMI = weight (kg) / height (m)². IOM 2009 ranges: Underweight 12.5-18 kg, Normal 11.5-16, Overweight 7-11.5, Obese 5-9 (singleton).
- 1Pre-pregnancy weight: 60.0 kg, height: 165.0 cm.
- 2Pre-pregnancy BMI: 60.0 / 1.65² = 22.04 → Normal (BMI 18.5-24.9).
- 3Recommended total gain: 11.5-16 kg over 40 weeks.
- 4Current weight: 65.0 kg → gained 5.0 kg by week 20.
- 5First trimester typically adds only 0.5-2 kg. Most gain happens in trimesters 2 and 3 (~0.4-0.5 kg/week for normal-BMI women).