Pregnancy Due Date Calculator 🤰 Pregnancy Due Date Calculator Calculate your estimated due date and weekly pregnancy progress FIRST DAY OF LAST PERIOD CYCLE LENGTH (DAYS) Calculate Due Date → Your baby is due: -- You Are Currently in Your 1st WEEK OF PREGNANCY Estimated Date of Conception: -- (0 weeks + 1 day or 0 months) This is based on the cycle length provided, not an average cycle length of 28 days. However it is still an estimate. 🍼 Weekly Development Your baby is beginning its amazing journey.