Pregnancy CalculatorDate of reference: Month JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember Day 12345678910111213141516171819202122232425262728293031 Year 20212022202320242025 First day of last menstrual period Date of conception Estimated due date View Results: First day of last menstrual period You are now Conception date End of first trimester End of second trimester Estimated due date