Pregnancy Week Calculator

Find out exactly how many weeks and days pregnant you are, plus get insights about your baby's development and what to expect in your current week.

Calculate Your Pregnancy Week

First day of your last menstrual period (LMP)

This is the standard method healthcare providers use to calculate pregnancy weeks

Pregnancy Trimester Guide

First Trimester

Weeks 1-12

Second Trimester

Weeks 13-26

Third Trimester

Weeks 27-40

Calculate your estimated delivery date

See how big your baby is each week

Track your baby's movements