Pre-pregnancy BMI bucket
Sample
Pre-BMI + week of pregnancy
What you get
Suggested gain range from standard chart classes.
Pregnancy Weight Gain Calculator
Recommended pregnancy weight-gain ranges on this calculator follow IOM-style categories based on pre-pregnancy BMI and are shown in pounds. They are population guidelines meant for education: your prenatal team may set different targets for twins, underweight or obesity history, or medical conditions. Height and weight inputs never leave your device.
Pregnancy Weight Gain Calculator
Based on IOM guidelines using pre-pregnancy BMI (not for clinical use).
BMI category
Normal
Total gain range (lb)
25–35 lb
These tools provide general fitness estimates only and are not a substitute for professional medical advice.
How to Use This Tool
- Enter pre-pregnancy weight and height.
- Read BMI category and suggested total gain span in pounds.
- Follow your clinician’s plan.
Features
- BMI categories
- Total pregnancy gain range (lb)
- Not a substitute for prenatal care
Example
Frequently Asked Questions
Where do gain ranges come from?
Ranges follow IOM-style categories based on pre-pregnancy BMI and are shown in pounds. Your prenatal team may set different targets.
Is this medical advice?
No. This calculator is for general education and planning only. Always consult a qualified clinician for personal health decisions.
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