Pregnancy Due Date Calculators

Our Due date calculator Will Quickly Calculate your Due date. Easily Track Baby Development Week by Week. Below is a brief description of the Due Date Calculator. HOW TO CALCULATE YOUR DUE DATE First day of last period The best way to predict your due date is to calculate 40 weeks, or 280 days, from the first day of your last menstrual cycle (LMP). You can deduct three months from your previous period and add seven days. Most doctors predict a baby's due date based on your LMP. Remember, the due date is merely an estimate, not a deadline. 4% of babies are born on time. Conception date You can use your conception date to calculate your due date if you've been tracking ovulation symptoms or using ovulation test strips. Add 266 days for your due date (or select "Conception Date" from the menu above, and let our Due Date Calculator do the math for you). IVF transfer date If you conceived through IVF, use your transfer date to calculate your due date. Three to five days following egg retrieval and fertilisation, most embryo transfers occur. If you transferred on day 3, count 263 days; on day 5, count 261 days. (Or choose "IVF" above.) Ultrasound scan Even if you don't remember when you conceived, had your last period, or ovulated, other indicators can help you and your practitioner establish your due date at your first prenatal consultation. Early ultrasounds help better date the pregnancy. Not all women get early ultrasounds. Some practitioners perform these routinely, while others only recommend them if your periods are irregular, you're 35 or older, you've had miscarriages or pregnancy difficulties, or your LMP and physical exam can't pinpoint your due date. Becoming a mother is one of the greatest feelings in life! Congratulations on this new journey!