Use our free Crown-rump Length (CRL) Calculator to accurately estimate gestational age (GA) from your embryo's measurement. A vital tool for early pregnancy dating and tracking fetal development in weeks and days, providing essential insights for expecting parents and healthcare professionals.
Formula:
The Gestational Age (GA) is estimated using the Crown-rump Length (CRL) measurement, typically applied between 6 to 14 weeks of gestation. A commonly used formula, adapted from Hadlock et al. (1992) for total days, is:
GA (Total Days) = 8.052 * √(CRL in mm) + 23.51
Where:
- GA = Gestational Age
- CRL = Crown-rump Length in millimeters (mm)
The total days are then converted into weeks and days for a more practical understanding.