Pregnancy Tools

Pregnancy Week Calculator

Find out exactly how many weeks and days pregnant you are and track your progress.

Calculate Your Week

Enter your last menstrual period date

First Day of Last Period

Enter the first day of your last menstrual period to calculate how far along you are

Enter your last period date and click "Calculate Week" to see your results

Pregnancy Trimester Guide

First Trimester

Weeks 1-13

• Major organs begin to form

• Morning sickness may occur

• Fatigue and mood changes

• First prenatal appointments

Second Trimester

Weeks 14-27

• Energy levels improve

• Baby bump becomes visible

• Feel baby's first movements

• Anatomy scan ultrasound

Third Trimester

Weeks 28-40

• Rapid baby growth

• Braxton Hicks contractions

• Nesting instinct kicks in

• Prepare for delivery

Explore our collection of calculators and trackers to support your pregnancy journey