Pregnancy Weight Gain Calculator
Estimate your recommended pregnancy weight gain using the Institute of Medicine guidelines, which base the target range on your pre-pregnancy body mass index. Healthy weight gain supports your baby growth while keeping risks lower for both of you, and the guidelines set different ranges for underweight, normal weight, overweight and obese starting points. This tool takes your height and pre-pregnancy weight to compute your BMI category, then shows the total recommended gain for a single pregnancy along with an expected range for your current week, since most gain happens in the second and third trimesters. Enter your height, starting weight, current weight and week of pregnancy to see where you sit against the guideline range. Everything is calculated in your browser, and this is general information, not medical advice. Your provider will personalize targets for twins, medical conditions and your individual situation.
How to use Pregnancy Weight Gain Calculator
- Enter your pre-pregnancy height and weight to set your BMI.
- Enter the current week of pregnancy.
- Read the recommended total and weekly gain range from IOM guidelines.
Frequently asked questions
What guidelines does this weight gain range follow?
It uses the Institute of Medicine, or IOM, recommendations, which set a total gain range based on your pre-pregnancy body mass index.
Why does pre-pregnancy BMI change the target?
A lower starting BMI is advised to gain more and a higher starting BMI less, so the recommended total ranges from about 28 to 40 pounds down to 11 to 20 pounds.
Does it show a weekly target too?
Yes; alongside the total it gives the suggested weekly gain for the second and third trimesters that matches your BMI category.
What is Pregnancy Weight Gain Calculator?
Estimate your recommended pregnancy weight gain using the Institute of Medicine guidelines, which base the target range on your pre-pregnancy body mass index. Healthy weight gain supports your baby growth while keeping risks lower for both of you, and the guidelines set different ranges for underweight, normal weight, overweight and obese starting points.
Is Pregnancy Weight Gain Calculator free to use?
Yes. Pregnancy Weight Gain Calculator is completely free, with no sign-up and no usage limits.
Does Pregnancy Weight Gain Calculator work in a web browser?
Yes. Pregnancy Weight Gain Calculator runs in any modern web browser. There is nothing to download or install.
Is my data private with Pregnancy Weight Gain Calculator?
Yes. Pregnancy Weight Gain Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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