Baby Tools › Pregnancy Week-by-Week

How many weeks pregnant am I?

See your current pregnancy week, your trimester, and how big your baby is right now.

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 last period or your due date.

2Enter the date.

3See your current week and your baby's size.

How are pregnancy weeks counted?

Pregnancy is counted from the first day of your last period, so you're considered '2 weeks pregnant' around conception. A full-term pregnancy is 40 weeks.

Is the baby size exact?

No — fruit comparisons are a friendly guide. Every baby grows at their own pace.