Select one of the calculators from the left hand menu to date pregnancies, convert biometric data to centiles and Z-scores for a given gestational age and to estimate fetal weight from biometric measurements.
Please note: the formulas were derived from studies published in peer review journals listed in index medicus, and care was taken in constructing these calculators. The final diagnosis is however the sole responsibility of the operators performing the examinations and ISUOG accepts no liability from the use of these calculators.
Formulae modified from:
We would like to thank Dr. R. Snijders for her valuable help and Astraia Software GmbH for their support in testing and refining the ISUOG Biometry Calculators.