Pregnancy Weight Gain Calculator

Recommended pregnancy weight gain by pre-pregnancy BMI (IOM guidelines).

Inputs

Results

Category

Normal weight

Recommended Gain

11.5–16 kg

How to use this calculator
  1. 1Enter pre-pregnancy BMI (from our BMI calculator if needed).
  2. 2Read recommended kg range and weight category.
  3. 3Track gain gradually — most gain is in 2nd and 3rd trimesters.
Pro tips
  • This tool is for educational planning only — not medical advice. Consult your healthcare provider for personal decisions.
Frequently Asked Questions
How to Use

About the Pregnancy Weight Gain Calculator

What it calculates

Shows recommended total pregnancy weight gain based on pre-pregnancy BMI (IOM/ACOG guidelines).

When to use it

Use at the start of pregnancy to discuss healthy gain goals with your provider.

Example

Pre-pregnancy BMI 22 (normal) → recommended gain 11.5–16 kg (25–35 lb).

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