Determination of pregnancy term by ultrasound

The first ultrasound is advisable after 10 weeks. At early stages of pregnancy, measuring the length of the embryo allows for a very accurate determination of the pregnancy term.

Why it is important for the pregnant woman and the doctor to know the exact pregnancy term? Firstly, to determine the due date, secondly, to adequately monitor the baby's development, timely correcting any developmental delays, and thirdly, to determine the term for maternity leave.

Instruction

- Enter the length of the embryo.
- Click "Calculate".

It is usually considered that the average duration of pregnancy is about 280 days with a normal course if counted from the first day of the last menstruation - this is «obstetric pregnancy term», the calculation of which is most often used by doctors in obstetric practice.

Result ± 5 days (IC 95%)

Safe days calendar	Chinese conception calendar
Child's weight	Future child's height	Chinese calendar

Embryo Length (from 3 to 84 mm)


Pregnancy term according to Smith
Pregnancy term according to Visser

Determination of pregnancy term by ultrasound

See also: