This calculator estimates fetal length from the ultrasound femur length measurement.
Fetal length in centimeters = 6.18 + 0.59 × femur length in millimeters.
REFERENCE
Vintzileos AM, Campbell, et al. The ultrasound femur length as a predictor of fetal length.
Obstet Gynecol. 1984;64(6):779–782. PMID: 6390277.
All calculations must be confirmed before use. The suggested results are not a substitute for clinical judgment. Neither Perinatology.com nor any other party involved in the preparation or publication of this site shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material.