Free & confidential

Gestational age calculator

Find out how far along you are and your estimated due date. This is an estimate — a pregnancy center can confirm it with a free ultrasound.

Start with what you know

First day of my last periodMy estimated due date

First day of your last period

This calculator assumes a 28-day cycle and estimates pregnancy from the first day of your last period, the way due dates are usually calculated.

Enter a date to see how far along you are, your estimated due date, and what trimester you're in.

Want free confirmation with an ultrasound?