Want to know your due date and even the date of conception? Just by entering the 1st day of your last menstrual cycle our pregnancy/due date calculator can tell you conception date, due date, first and second trimester dates and also tell you how pregnant you are (gestational age). To calculate your fertile phases, visit the ovulation calculator.

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1st Day of Last Menstrual Period
Your Menstrual Cycle Length  

Your Estimated Due Date is
Estimated Conception Date
How Pregnant Are You?
End of 1st Trimester (12 wks)
End of 2nd Trimester (27 wks)

N.B. This is not an official medical diagnosis. The calculations are estimates based on averages.

If you're confused when people talk about baby weight in pounds use this handy website to make a quick baby weight conversion to kilos.