Accurate age estimation of these fetuses can be very important to medico-legal authorities, particularly as it is sometimes necessary to determine if these fetuses are those of a full-term or a pre-term fetus. Age estimation is usually the primary characteristic for identification and is often the only means of identification for fetuses since they do not usually have any other type of identification with them. Age estimation can also play an important role in the prosecution of forensic cases. In this article, we discussed the different methods of age estimations and their medico-legal importances.