Pregnancy Weight Tracker
Track your weight gain and see how it compares to IOM recommended guidelines.
Unit
Pre-pregnancy BMI
Based on IOM 2009 guidelines. Always discuss weight gain with your midwife or doctor.
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Track your pregnancy weight gain week by week and compare it to NHS and ACOG recommended guidelines. Log your weight at each visit, view your progress on a chart, and feel informed without the worry — weight during pregnancy naturally fluctuates and every body is different.
Frequently asked questions
How much weight should I gain during pregnancy?
Recommended weight gain depends on your pre-pregnancy BMI. For a normal BMI (18.5–24.9), guidelines suggest 11.5–16 kg (25–35 lbs) for a single pregnancy. Underweight women may need to gain more; overweight women less. Always follow your healthcare provider's personalised guidance.
When do I gain the most weight during pregnancy?
Most weight gain happens in the second and third trimesters. In the first trimester, some women gain very little or even lose weight due to morning sickness. Weight gain typically accelerates from around week 14 onwards.
Is pregnancy weight gain the same for twins?
No. Twin pregnancies typically have higher recommended weight gain — around 16.8–24.5 kg (37–54 lbs) for a normal BMI. Your doctor or midwife will give you personalised targets.
What if I'm gaining weight faster than recommended?
Try not to stress — weight gain during pregnancy is not linear and varies week to week. If you're consistently gaining faster than guidelines suggest, discuss it with your midwife or doctor. Never restrict food intake during pregnancy without medical advice.