Pregnancy Weight Gain Calculator

Estimate recommended pregnancy weight-gain ranges from prepregnancy size and current gestational week.

Preparing Pregnancy Weight Gain Calculator

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Input

Pick metric or imperial units, enter prepregnancy height and weight, then add the current pregnancy week to see the recommended gain range. This tool shows the result instantly without step-by-step output.

Input summary

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How to use Pregnancy Weight Gain Calculator

Enter the prepregnancy measurements and the current week, and the calculator will estimate the weight-gain range commonly recommended for that starting BMI band.

What this calculator is for

This calculator is for understanding guideline-based pregnancy weight-gain ranges, which are usually tied to prepregnancy BMI rather than to a single target for everyone. It is a planning reference and does not replace individualized obstetric advice.

Tips

Use prepregnancy measurements if you have them, because the guidance is based on starting BMI.
Weight gain is not expected to move at the same pace in every trimester.
If your clinician has already given a personalized target, that guidance should take priority over a general calculator.