How does a tachi differ from a katana in shape and mounting?
Updated Mar 2026
The tachi predates the katana by several centuries and was designed primarily for use on horseback. Its blade is generally longer - often exceeding 70 cm - and carries a more pronounced curvature measured from the base rather than the center of the blade. Historically, the tachi was suspended edge-down from a cord at the hip, which is why many tachi fittings, including the tsuba and habaki, are oriented differently from their katana counterparts. The katana, by contrast, is worn edge-up through the obi. For display purposes, the tachi's deeper curve and longer saya create a dramatically different visual profile when mounted horizontally on a sword stand, giving collectors a silhouette that reads as distinctly classical and pre-Edo in character.