Pregnancy Weight Gain Calculator
Estimate healthy weight gain during pregnancy based on pre-pregnancy BMI and gestational age.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Pregnancy Weight Gain Calculator
- Enter your pre-pregnancy weight in kilograms (kg). Valid range: 30–200 kg.
- Enter your height in centimeters (cm). Valid range: 100–250 cm.
- Enter your current gestational age in weeks (0–42).
- Enter your current weight in kilograms (kg). Valid range: 30–250 kg.
- Click the Calculate button.
What you get:
- Your total weight gain so far.
- Recommended weight gain range for your current week, based on IOM guidelines.
- A color-coded status: green (within range), yellow (below), or red (above).
- Details: your pre-pregnancy BMI, total recommended gain range, and weekly rate for the 2nd/3rd trimester.
Note: All measurements must be in metric units (kg and cm).
Previous Results
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Frequently Asked Questions
It estimates the healthy weight gain range during pregnancy based on your pre-pregnancy BMI and current gestational age, following IOM guidelines.
The calculator uses your pre-pregnancy BMI to determine a total gain range and a weekly rate for the second and third trimesters.
Proper weight gain supports fetal development and reduces risks of complications like gestational diabetes, preeclampsia, and cesarean delivery.
