Pregnancy Weight Gain Guide
Show CDC total pregnancy weight-gain reference ranges in kilograms from pre-pregnancy BMI and singleton/twin status.
How to use
- Enter pre-pregnancy height and weight.
- Choose singleton or twins and calculate BMI category plus total-gain range.
Capabilities and scope
Pre-pregnancy height and weight determine the BMI band, then CDC pound ranges are converted to kilograms.
How it works
BMI bands are <18.5, 18.5–<25, 25–<30, and ≥30; the corresponding CDC pound range is multiplied by 0.45359237.
Example
Normal pre-pregnancy BMI with a singleton maps 25–35 lb to about 11.3–15.9 kg.
Interpretation
Accepted ranges are height 120–220 cm and pre-pregnancy weight 30–250 kg.
Useful for
- View CDC pregnancy-gain ranges in metric units
- Compare singleton and twin reference ranges
Before you use it
- It is not an individualized prenatal target; triplets or special medical circumstances require professional guidance.
Edge cases
- The twin ranges are direct metric conversions of the CDC reference table.
Standards and references
Frequently asked questions
Do I enter my current pregnancy weight?
No. The runner classifies BMI from pre-pregnancy height and weight.