Pregnancy Weight Gain Calculator — IOM Guidelines — Calculator
Track your pregnancy weight gain against IOM guidelines based on pre-pregnancy BMI. Features worked examples, quick reference BMI-based ranges.
Pregnancy Weight Gain
Results below
Enter Values
IOM Recommended Total Gain
▲ 25–35 lbs
Weight Gained So Far (Week 20)
▲ 15.0 lbs
Gain Status vs IOM Guidelines
▲ Within Recommended Range
Projected Total Gain (at current rate)
24 lbs
First Trimester Target
1–4.4 lbs total
Weekly Gain Target (2nd/3rd Trimester)
0.8–1 lbs/week
Scenario Comparison
Continue with
Embed Code
Copy and paste this HTML snippet into any web page to embed this calculator directly.
<iframe src="http://127.0.0.1:59362/embed/health/pregnancy-weight-gain-calculator?ref=embed" title="Pregnancy Weight Gain Calculator — IOM Guidelines — Calculator" width="100%" style="max-width:600px; border:none; height:500px;" loading="lazy"></iframe>
Direct Link
Share this link to let others open the calculator in their browser.
| Pre-Pregnancy BMI | BMI Range | Total Gain (40 wk) | Weekly (2nd/3rd Tri) | Your Category |
|---|---|---|---|---|
Underweight | < 18.5 | 28–40 lbs | 1.0–1.3 lbs | — |
Normal Weight | 18.5–24.9 | 25–35 lbs | 0.8–1.0 lbs | — |
Overweight | 25–29.9 | 15–25 lbs | 0.5–0.7 lbs | — |
Obese | ≥ 30 | 11–20 lbs | 0.4–0.6 lbs | — |
Your Gain Status
15.0 lbs
Within Recommended Range
Medical Disclaimer
The IOM weight gain guidelines are clinical recommendations based on pre-pregnancy BMI. Individual variation is normal and expected. These guidelines apply to singleton pregnancies in women with healthy pregnancies. Always discuss your weight gain goals and progress with your OB/GYN, midwife, or healthcare provider. This calculator is for informational purposes only and is not a substitute for professional medical advice.
Related Calculators
Reviews
No reviews yet. Be the first to share your experience with Pregnancy Weight Gain Calculator — IOM Guidelines — Calculator.
Write a Review