Did you have an early ultrasound (before 12 weeks)? Has your doctor changed your EDD at all due to growth?
If you've had the same EDD since your early ultrasounds, it would be something like this:
First Day of Last Menstrual Period: June 8, 2013
Probable Date of Ovulation: June 22, 2013
Possible Dates of Conception: June 18 to June 26, 2013
Due Date: March 15, 2014 (40 weeks)