Calculator of Gestational Age by Ultrasound

An online calculator to find out the current pregnancy week using ultrasound results. Embryo length measurement allows you to determine gestational age (pregnancy week) with great accuracy.

Calculator of Gestational Age by Ultrasound

In order to determine the estimated / approximate date of delivery, it is necessary to know the length of pregnancy. When the future mother knows what pregnancy week she is in, it is easier to plan maternity leave and other activities related to pregnancy.

Calculator for estimating the week of pregnancy according to the size of the fetus at ultrasound


Embryo length, mm
Please, Enter all values correctly.
Pregnancy term
weeks days


  • This pregnancy calculator is only used until the 14th week of pregnancy, because until then it is the most accurate.


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