How long is a samurai odachi compared to a standard katana?
Updated Feb 2026
A samurai odachi is substantially larger than a standard katana in every dimension. A standard katana measures roughly 38 to 42 inches in total length with a blade of 27 to 30 inches. A samurai odachi is considerably longer: blade lengths of 35 inches or more are typical, with overall lengths - including handle and fitting proportions - that can range from around 55 to more than 60 inches depending on the specific piece. The weight difference is also significant: the longer blade and proportionally larger fittings make an odachi noticeably heavier than a katana, which is part of what gives the piece its physical authority as a display object. This scale difference is the defining characteristic of the odachi category and the primary reason collectors choose it when they want a single high-impact display centerpiece rather than a more conventionally sized sword.