Pregnancy Calculator

Calculating Your Conception Date

Are you pregnant however not sure exactly when you conceived?

Trying to figure out exactly how far along you are unfortunately is not as easy as plugging in the start date of your LMP (last menstrual period). Most people don’t have an exact 28-day cycle which most calculators are built on. Unless you know the exact day you had sex and you have a very predictable cycle, the date can be off by as much as a week. Fill in your Last Menstrual Period (LMP) date to calculate your Due Date. Calculating your Due Date, unfortunately, is not an exact science. Did you know that data from the Perinatal Institute, a non-profit organization, shows that an estimated date of delivery is rarely accurate – in fact, a baby is born on its predicted due date just 4% of the time.

Provided by YourDueDate.com