Nepedia
Back to Discover
Advanced Reader
📖

Katana

language culture Maturity 11-13 war conflict Next article →

This article covers sensitive topics: war_conflict. Parents can manage visibility in Parental Controls.

The katana is a distinctive Japanese sword known for its curved, single-edged blade.

Katana (common shema)
Katana (common shema)

It is part of the nihontō family of swords. A true katana must have a blade length, or nagasa, of more than 2 shaku. This measurement is approximately 60.6 centimeters or 23.86 inches. The sword features a long grip designed for two-handed use. A metal guard called a tsuba separates the blade from the handle. This guard can be shaped like a circle or a square.

The katana is a symbol of the samurai and their authority. It remains one of the most famous weapons in military history.

Understanding a katana requires looking at its specific parts and how it is worn. The blade is attached to a part called the nakago, or tang. On many swords, a signature called a mei is carved into the side of the nakago. This signature must face outward when the sword is worn.

Nakago no katana Met 2007.478.3
Nakago no katana Met 2007.478.3

The katana is worn thrust through a belt-like sash called an obi. Unlike the older tachi, the katana is worn with the cutting edge facing upward. This orientation is essential for specific combat techniques. It allows a warrior to draw the sword and strike in one motion. This method is central to the martial art of iaido.

Sayuri Iaido
Sayuri Iaido

There are several ways to classify Japanese swords based on their era of production. Historians divide sword history into specific periods. Jōkotō refers to ancient swords made before around 900. Kotō describes "old swords" made between 900 and 1596. Shintō refers to "new swords" from 1596 to 1780. Shinshintō covers "newer swords" from 1781 to 1876. Finally, gendaitō refers to modern or contemporary swords made from 1876 to the present.

Image20swjp
Image20swjp

These categories help experts identify the age and style of a blade.

The katana evolved from much shorter weapons used in earlier centuries. It likely originated from the sasuga, a type of tantō or short knife. During the Kamakura period (1185–1333), lower-ranking samurai used the sasuga as a spare weapon. These foot soldiers primarily used the naginata, a long polearm, in battle. Over time, these short blades were gradually lengthened. By the early Muromachi period (1336–1573), they had transitioned into the katana. Some swords were even repurposed through a process called suriage. In suriage, smiths cut and shortened the root of an old tachi to create a katana.

Katana, Sōshū Masamune (Ishida Masamune)
Katana, Sōshū Masamune (Ishida Masamune)

Changes in warfare directly influenced how the katana was used and made. During the Sengoku period, the battlefield changed due to large-scale mobilization. Soldiers known as ashigaru fought in large groups. They often used yari (spears) or tanegashima (muskets) as their main weapons. Because the katana was easier to carry than a long tachi, it became the mainstream choice.

Katana Muramasa
Katana Muramasa

During this time, smiths began mass-producing lower-quality swords called kazuuchimono. These were often lent to ashigaru for combat. In the peaceful Edo period, the katana's role shifted toward being a symbol of status. It was used as a gift between daimyo, or feudal lords, and their samurai.

The katana's influence reached far beyond the borders of Japan. By the 15th century, Japanese swords were being exported to China and Korea. In 1430, records show a Korean swordsmith mastered Japanese methods and presented a sword to the King of Korea.

Katana, Sōshū Masamune (Ishida Masamune)
Katana, Sōshū Masamune (Ishida Masamune)

During the late 15th and early 16th centuries, trade with the Ming dynasty reached a peak. At least 200,000 swords were shipped to China during this time. This was part of an effort to control the supply of weapons. In China, the sword influenced the development of new weapons like the wodao and miaodao. The sword also reached Thailand, where it was prized for both art and battle.

The katana is more than just a weapon; it is a piece of cultural history. It connects to religious practices, as swords were offered to the kami in Shinto shrines. It also connects to the history of linguistics. The word katana comes from kata, meaning "one-sided," and na, meaning "blade."

Katana (common shema)
Katana (common shema)

Even the name traveled to Europe through Portuguese traders. In Portuguese, the word catana refers to a large knife or machete. Whether viewed as a tool of war or a work of art, the katana remains a significant part of global history.

711 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

🖼️ Images & Media (20)
File:Samurai with tachi.png
Samurai with tachi.png
File:Nakago no katana Met 2007.478.3.jpg
Nakago no katana Met 2007.478.3.jpg
File:Master-Swordsmith-Goro-Masamune-Ukiyo-e.png
Master-Swordsmith-Goro-Masamune-Ukiyo-e.png
File:Katana, Sōshū Masamune (Ishida Masamune).jpg
Katana, Sōshū Masamune (Ishida Masamune).jpg
File:Katana - Kiriha Sadamune.jpg
Katana - Kiriha Sadamune.jpg
File:Katana Muramasa.JPG
Katana Muramasa.JPG
File:青漆銀流水文半太刀大小, "Daisho" Style "Handachi" Sword Mounting, Silver stream design on green lacquer ground.jpg
青漆銀流水文半太刀大小, "Daisho" Style "Handachi"...
File:Long Sword and Scabbard LACMA AC1999.186.1.1-.16.jpg
Long Sword and Scabbard LACMA...
File:黒蝋色塗鞘大小拵刀装具, Sword Fittings Tsuba, Fuchigashira, Menuki, Kozuka, Kogai.jpg
黒蝋色塗鞘大小拵刀装具, Sword Fittings Tsuba,...
File:Daishō (Katana and Wakizashi) forged by Minamoto Kiyomaro 2, 源清磨嘉永元年八月日.jpg
Daishō (Katana and Wakizashi) forged by...
File:Daisho Uesugi clan 2.jpg
Daisho Uesugi clan 2.jpg
File:Blade and Mounting for a Sword (Katana) 4.jpg
Blade and Mounting for a Sword (Katana) 4.jpg

+ 8 more

More to explore

✨ What else?

Related topics you might enjoy

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.