What makes an odachi different from a standard katana in size and use?
Updated Feb 2026
An odachi differs from a standard katana primarily in blade length and overall scale. A katana typically has a blade length of 60 to 75 centimeters and an overall length including the handle of 95 to 115 centimeters. An odachi starts where the katana ends: blade lengths of 90 centimeters are common, and many examples extend to 110 or 120 centimeters, with overall lengths of 140 to 180 centimeters. This scale difference has practical implications. An odachi requires two hands and a wider stance to manage effectively due to its length and weight. Historically, odachi were associated with specific tactical roles rather than the general-purpose function of the katana - some accounts describe odachi being used from horseback for their additional reach, while others describe them in ceremonial and votive contexts. As collectibles, odachi make a significantly more dramatic display statement than standard katana due to their scale - a properly displayed odachi commands attention in a room where a katana might be overlooked.