Pregnancy Weight Gain Calculator
Estimate a guideline pregnancy weight gain range based on pre-pregnancy BMI and your current week of pregnancy.
Estimate Recommended Gain
kg
cm
weeks
Pregnancy weight gain calculator guide
WeCovr's pregnancy weight gain calculator estimates a broad recommended gain range using pre-pregnancy BMI and weeks pregnant. It is designed for general information and not as a substitute for maternity care advice.
How this pregnancy weight gain calculator works
The calculator estimates pre-pregnancy BMI from your weight and height, places that BMI into a standard category, and then applies widely used singleton-pregnancy gain ranges.
It shows both a full-pregnancy guideline range and a rough estimate of what gain to date may look like at your current week.
Uses pre-pregnancy BMI as the starting point.
Shows a broad guideline for total pregnancy gain.
Also estimates a rough gain-to-date range by week.
Why personalised advice matters in pregnancy
Weight gain can vary with symptoms, multiple pregnancy, medical conditions, fetal growth, and clinical history. That is why your own midwife or obstetric team should guide decisions that affect pregnancy care.
How to use this result safely
Use the range as a discussion prompt rather than a performance target. Trends, nutrition quality, and clinical review matter more than chasing any single number.
Pregnancy weight gain context
| Pre-pregnancy BMI group | Typical total gain trend | Why range matters | Caution |
|---|---|---|---|
| Lower BMI | Higher suggested gain | Supports maternal and fetal needs | Needs clinical review if symptoms or concerns exist |
| Mid-range BMI | Moderate suggested gain | General singleton guidance | Still not personalised advice |
| Higher BMI | Lower suggested gain | Guidance often differs by baseline BMI | Medical context matters more than formulas |
Related WeCovr resources
FAQs
Is this suitable for twins or multiple pregnancy?
No. This version is intended as a general singleton-pregnancy guide only.
Why does pre-pregnancy BMI affect the result?
Because common pregnancy gain guidance is usually grouped according to pre-pregnancy BMI categories.
Should I worry if I am outside the range?
Not automatically, but pregnancy weight gain should be discussed with your maternity team rather than judged by an online tool alone.
Does this replace advice from my midwife?
No. It is general information only and not a substitute for personalised maternity advice.
Get your score
Get your free Protection Score
Check how protected you are, spot the biggest gaps, and then decide what to do next.
Answer a few quick questions
See where your biggest protection gaps may be
Move into the right next step if you want help
What you get
A quick view of your current protection position
A clearer idea of where the biggest gaps may be
A direct route to tailored help if you want it