Pregnancy Calendar Calculator By Due Date

Named after a german obstetrician who practiced in the early 1800 s naegele s rule predicts childbirth to occur 280 days after the first day of the last menstrual period. Naegele s rule is what this due date calculator and pregnancy calendar is based on. Please remember that the result will not necessarily be the day that your baby arrives.

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Most pregnancies last around 40 weeks or 38 weeks from conception so typically the best way to estimate your due date is to count 40 weeks or 280 days from the first day of your last menstrual period lmp.

Pregnancy calendar calculator by due date. Your due date calculate. This pregnancy due date calculator will give you a rough idea of when your baby should be born. Default 28 optional.

Note that your menstrual period and ovulation are counted as the first two weeks of pregnancy. And that s how most healthcare providers do it. This free pregnancy conception calculator estimates a range of conception dates based on a provided due date last period date or ultrasound date.

This is an estimated date of when your baby is due. The most common way to calculate your pregnancy due date is by counting 40 weeks from the first day of your last menstrual period lmp. Babies rarely keep to an exact timetable so your full term pregnancy can be anywhere from 37 and 42 weeks.

Your due date is calculated by adding 280 days 40 weeks to the first day of your last menstrual period assuming a 28 day cycle. Determine the most probable conception dates and explore a number of other pregnancy calculators as well as hundreds of other calculators addressing health fitness finance math and more. If your menstrual cycle length is the average length 28 day cycle your menstrual cycle probably started about two weeks before you conceived.

If you deliver on your due date your baby is actually only 38 weeks old not 40. Another way to do it is to subtract three months from the first day of your last period and add seven days. First day of last menstrual period average length of cycles from first day of your period to the first day of your next period.

If you know the date of the first day of your last menstrual period lmp or have already had your first ultrasound scan you can use this tool. We can t calculate your due date accurately if the date entered for your last menstrual period is more than 9 months ago or is in the future. Pregnancy calendar and due date calculator calculate based on.