How does a tanto differ from a katana or wakizashi?
Updated Mar 2026
Blade length is the primary distinction in traditional Japanese classification. A tanto measures under one shaku (approximately 30 cm / 12 inches), making it the shortest of the three main blade forms. A wakizashi falls between one and two shaku, while a katana exceeds two shaku. Beyond length, the tanto's blade geometry is notably different: it typically uses a flat (hira) or single-bevel grind with an angular, reinforced tip - the latter designed to maintain structural integrity at a shorter overall length. Historically, tanto were carried as companions to longer blades, often by samurai as a secondary piece or by court officials who were not permitted to carry longer arms.