Pregnancy Weight Gain

Healthy gain range from pre-pregnancy BMI.

Input Parameters

Height (cm)

Weight (kg)

Recommended gain11.5–16 kg

Pre-pregnancy BMI22.0 · Normal Weight (18.5 - 24.9)

Weekly rate0.42

175 available

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IOM-recommended pregnancy weight gain range and weekly rate from pre-pregnancy BMI.

BMI bands?

Under 18.5: 12.5–18 kg; 18.5–25: 11.5–16; 25–30: 7–11.5; 30+: 5–9.

Weekly rate?

Second/third trimester pace: 0.51 / 0.42 / 0.28 / 0.22 kg per week.

Twins?

Ranges run higher — ask your doctor for twin-specific targets.