Due Date Calculator

Calculate Your Due Date

First day of last period

Average cycle length

Due Date

40 weeks from LMP

Conception Date

~2 weeks after LMP

Current Gestational Age

First Trimester Ends

Week 13

Second Trimester Ends

Week 27

Full Term

Week 37

Only about 5% of women deliver on their exact due date. Most babies are born within two weeks before or after.