Pregnancy Calculator

LMP

Conception Date

Due Date

First Day of Last Period (LMP)

Estimated Due Date:

1st Trimester ends:

2nd Trimester ends:

Viability (24 wks):

Full Term (37 wks):

Note: This tool is for informational purposes only and does not substitute medical advice.

            > Naegele's Rule: EDD = LMP + 7 days - 3 months + 1 year

            > Gestation: 280 days from LMP

How accurate is this?

Only about 5% of babies are born exactly on their due date. It's an estimate.

What if I don't know my LMP?

An ultrasound can help date the pregnancy accurately.

When can a heartbeat be detected?

Usually around 6-7 weeks of gestation via transvaginal ultrasound.

What does full term mean?

A pregnancy reaching 37 weeks is considered early term, and 39 weeks is full term.