Trafalgar Law, a character from the popular manga and anime series "One Piece," wields a sword known as "Kikoku." The exact length of Law's sword, Kikoku, is not officially specified in the series or other official sources.

In terms of appearance, Kikoku is depicted as a relatively long sword with a curved blade and a distinct hilt design. The length of Law's sword can vary depending on artistic interpretation and individual preferences of cosplay or fan-made replicas.

It's important to note that when cosplaying or creating fan-made replicas of Trafalgar Law's sword, the length is often adjusted to suit the individual's height and the desired portrayal of the character. Therefore, if you're looking for a specific measurement for a Trafalgar Law sword replica, it would be best to refer to official merchandise or consult with experienced cosplayers or prop makers who specialize in "One Piece" replicas.