Pregnancy Due Date Calculator

How many weeks pregnant are you? Use the free Babypalooza pregnancy calculator to calculate your due date. The Pregnancy Calculator provides a due date estimate based on the provided information. Childbirth usually occurs approximately 38 weeks after conception, or about 40 weeks after the last menstrual period.



Enter the date of the first day of your last menstrual period (LMP):



Probable date of conception:


Fetus Age Today:


Best date range for NT scan:


(12 weeks 3 days to 13 weeks 3 days)

First Fetus Heart Tones by Doppler:


(11 to 12 weeks)

Best time to evaluate cervical length in patient with risk factors:


Best time for routine anatomy ultrasound:


(18 to 20 weeks)

Estimated Due Date:



More Pregnancy Resources

Babypalooza July 28-30

Feeling overwhelmed building your baby registry

Attend the Virtual Baby Expo July 28-30 to get the help you need. Enjoy a front row seat to top baby brands such as Boppy, Chicco, Medela, Happy Family, and Thule where they demonstrate the latest car seats, strollers, carriers, and breast pumps and give them away! Register for FREE to be entered into the raffle drawings.