How to interpret this estimate

Compare pre-pregnancy BMI with a broad singleton pregnancy weight-gain range. Uses pre-pregnancy BMI categories and broad singleton pregnancy weight-gain ranges published in public-health guidance.

When this result is useful

Use it to compare pre-pregnancy BMI with broad singleton pregnancy weight-gain ranges.

Common limitations

Twin or higher-order pregnancies require different recommendations. A prenatal care professional should individualize targets and monitor pregnancy health.

This calculator uses the selected inputs and the fixed formula behind the tool to produce an estimate. Review the units, assumptions, and result labels before using the output for planning.

Health results are screening or planning estimates only. They do not diagnose health status or replace advice from doctors, dietitians, or qualified healthcare professionals.

Read the medical disclaimer for more context.