Dating pregnancy from ovulation

Pregnancy Due Date Calculator

If you conceived through in vitro fertilization IVF , the pregnancy due date calculator may not be the right method for you. If you fall into that bucket, see below for how to calculate your due date for an IVF pregnancy. If you happen to know the exact day you conceived, you could calculate your baby due date by counting 38 weeks from the date of conception 38 weeks is said to be the length of human gestation. Even if you had sex only once during your six-day fertile period , you may not have actually conceived that day unless you happened to be ovulating. Conception happens when your egg is fertilized, but since sperm can live inside your fallopian tubes for up to five days waiting for an egg to be released, you could conceive up to five days after having sex. The most common way of determining when baby will be born is to calculate your due date based on your last menstrual period LMP , which is how a pregnancy calculator works.

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Pregnancy lasts an average of days 40 weeks from the first day of your last menstrual period LMP. Read our report on the 13 best pregnancy iPhone and Android apps of the year here. If you have regular day menstrual cycles , there are two ways to calculate your due date. The other way to calculate your due date is to use a pregnancy wheel.

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Most babies arrive within a week of their due date. What's the average length of your menstruation cycle? Your due date is a way of predicting a period of time when you might go in to labour, based on when you conceived. Most babies are born at full-term which is between 37 weeks days and 42 weeks days , a period referred to as "term", when the baby has reached full maturity. On average, most pregnancies last around 40 weeks — which is 38 weeks after conception or days.

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How to Calculate Your Due Date

Sign Up. Sign Out. Use this pregnancy calculator to find your due date based on the date of your last menstrual period, conception date, IVF three-day or five-day transfer date, or date of your last ultrasound. Calculation Method. The first day of your last period.

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