What is the longest sword in the world called?

The longest sword in the world is known as the "Ōdachi" or "Nodachi." The terms Ōdachi and Nodachi are used interchangeably, and both refer to an exceptionally long Japanese sword.The Ōdachi typically had a blade length of around 3 to 4 feet (approximately 90 to 120 centimeters) or even longer. These swords were characterized by their extended reach and were primarily used by samurai warriors during battles or in ceremonial contexts.Due to their size and weight, Ōdachi swords were typically wielded with two hands. They were used for powerful sweeping strikes, cutting down multiple opponents, or dismounting riders. The long reach of the Ōdachi allowed samurai to maintain distance from their foes and strike from a position of advantage.The term Ōdachi translates to "big/great sword," reflecting its exceptional length compared to other traditional Japanese swords like the katana or tachi. However, it's worth noting that the Ōdachi is not commonly used in modern martial arts or combat due to its impracticality in close-quarters fighting or the confined spaces of indoor environments. Instead, it has become more of a historical and ceremonial curiosity.

Do you hold a katana with one or two hands?

A katana is traditionally held with two hands. When wielding a katana, one hand is positioned closer to the tsuba (guard), while the other hand holds the hilt farther down. This grip with both hands provides stability, control, and balance during various cutting and striking techniques.The lead hand, which is closer to the tsuba, typically acts as the guiding hand and helps control the direction and angle of the blade. The trailing hand, farther down the hilt, supports and stabilizes the sword, providing additional power and control during strikes.By using a two-handed grip, the wielder can effectively leverage the weight and length of the katana, enabling precise movements, better control, and increased cutting power. The two-handed grip also allows for swift transitions between different techniques and provides better defense against an opponent's attacks.While the two-handed grip is the traditional method of wielding a katana, it's worth noting that there can be variations and adaptations in grip depending on the specific martial arts style, personal preference, or specific techniques being employed. Some techniques or situations may require briefly transitioning to a one-handed grip for versatility or speed.In summary, a katana is generally held with a two-handed grip, with one hand closer to the guard and the other hand farther down the hilt. This grip provides stability, control, and power during various cutting techniques, although there can be variations based on martial arts styles or specific techniques.

How does a ninjato differ from a katana in terms of design?

The most immediate distinction is geometry. A katana features a pronounced curvature - the sori - that develops during the differential hardening process as the edge contracts slightly faster than the spine. A ninjato, by contrast, presents a straight or very slightly curved blade profile with a squared or compact kissaki (tip). The straight silhouette historically associated with the shinobi aesthetic also tends to pair with a shorter overall length and a squared tsuba, which contrasts with the round or oval iron tsuba more common on classical katana mounts. For collectors, these differences translate directly into display aesthetics: a ninjato reads as geometric and minimal on a rack, while a katana communicates the flowing arc that defines classical Japanese blade design. Neither is superior - they represent distinct visual vocabularies within the broader world of Japanese edged collectibles.

What makes a Japanese odachi different from a katana visually and structurally?

Updated Feb 2026

A Japanese odachi and a katana share the same fundamental blade geometry - a curved single-edged blade with a kissaki tip, tsuba guard, wrapped handle, and matching scabbard - but differ dramatically in scale and in several structural details that result from that scale difference. The odachi's blade length of 35-plus inches (compared to the katana's 27-30 inches) and overall length of 50-65 inches (compared to the katana's 38-42 inches) create an immediately different visual impression. The handle is also proportionally longer on an odachi to accommodate the two-handed extended grip that the blade's length and weight require, typically measuring 14 to 20 inches compared to the katana's 10-12 inch handle. The sori curve profile may differ as well - some odachi feature a different curvature distribution optimized for the battlefield stance rather than the combat-drawing techniques of the shorter katana. The blade width and thickness taper differently at the odachi scale, and the habaki blade collar and tsuba guard are correspondingly larger. Visually, the odachi's scale makes it unmistakably distinct from a katana even at a distance.