Baby Tools › Pregnancy Weight Gain

Pregnancy Weight Gain Calculator

See a healthy total weight-gain range for your pregnancy, based on your starting BMI.

This tool is for general information only and is not medical advice. Always talk to your doctor or midwife about your pregnancy and your baby.

How it works

1Choose your units and enter your height.

2Enter your pre-pregnancy weight.

3See your BMI and recommended gain.

How much weight should I gain?

It depends on your pre-pregnancy BMI. Guidelines suggest 11.5–16 kg for a normal BMI, with different ranges for under- and over-weight starting points.

Is more weight bad?

Gaining outside the recommended range can carry some risks, but every pregnancy is different. Your doctor or midwife is the best guide.