What makes a Nodachi different from a katana or tachi?
Updated Feb 2026
The defining characteristic of a Nodachi is blade length. While a katana typically measures between 24 and 30 inches and a tachi around 27 to 31 inches, a Nodachi must exceed approximately 35 inches of blade to earn the designation. Historically, that extra length meant the sword could not be drawn from the hip like a katana — it was either carried across the back, drawn by an attendant, or simply carried unsheathed. The handle is also proportionally longer to allow a wide two-handed grip. In terms of construction lineage, the tachi and Nodachi share a similar deep curvature and suspension style with the edge facing downward, but the Nodachi pushes every dimension to a larger scale. For collectors, the practical difference is a dramatically more imposing display presence and a forging process that requires greater skill to maintain consistent temper across such a long blade.