Katana, Wakizashi, Tanto, Tachi: The Complete Guide to Japanese Sword Types
Japanese swords are not one object. They are a family of forged blades — katana, wakizashi, tanto, and tachi — each built around a specific length, curvature, carry style, and purpose. If you have ever wondered why a proper samurai display holds two swords instead of one, or why "tanto" sounds like a knife while "tachi" sounds like a sword, the answer sits inside a thousand-year arc of Japanese warfare and law. This guide walks through every major type, how to tell them apart, and how to match the right blade to how you actually plan to use it.
At a glance: the four main types compared
| Type | Blade length | Curvature (sori) | Era of dominance | How it was worn | Primary role |
|---|---|---|---|---|---|
| Katana | 60-80 cm (24-31 in) | Moderate (1.5-2.5 cm) | Muromachi → Edo (14th-19th c.) | Edge up, through the obi | Samurai primary weapon |
| Wakizashi | 30-60 cm (12-24 in) | Moderate | Muromachi → Edo | Paired with a katana (daisho) | Companion / indoor blade |
| Tanto | under 30 cm (under 12 in) | Straight or slight | Heian onward (9th c.+) | Tucked at the waist or sleeve | Armor-piercing dagger |
| Tachi | 70-80+ cm (28-32+ in) | Pronounced (often 3+ cm) | Heian → Muromachi (9th-14th c.) | Edge down, slung by cords | Cavalry sword |
The shortest answer to "what is the difference?" is in that table. The rest of this guide explains why those differences exist, and which one is right for you.
1. The katana — the sword most people picture
When someone says "samurai sword," they almost always mean a katana. The blade runs roughly 60 to 80 centimeters (24 to 31 inches), with moderate curvature, a single edge, and a long two-handed grip. It was designed for fast foot combat: drawn from the sheath and cut in a single continuous motion, edge leading. The samurai carried it thrust through the obi (the wide sash belt) with the edge facing up, which is the exact position required to draw straight into a cut — the foundation of iaido and battojutsu.
The katana rose to dominance in the Muromachi period (14th century) as warfare shifted from mounted archery to close-quarters infantry. By the Edo period it had become not just a weapon but a legal identity marker: only samurai class members were permitted to wear one in public. That law is the reason a daisho pairing — katana plus wakizashi — came to mean "this person is a samurai."
Today the katana is the default starting point for collectors, home display, tameshigiri cutting practice, and serious martial arts. If you are buying your first Japanese sword, a katana is almost certainly the right shape. The decision then collapses into steel and mounting — which is covered below. Start with our samurai katana collection if you want to browse live inventory.
2. The wakizashi — the companion blade
A wakizashi is a shorter curved sword, 30 to 60 centimeters (roughly 12 to 24 inches), worn alongside the katana as part of a two-sword set called a daisho (literally "big-small"). It was not a backup weapon in the modern sense of a sidearm. It was a specialized tool for a specific set of situations: close-quarters fighting indoors where a full-length katana was physically awkward, removing the head of a defeated opponent, and, in the most ritual context, seppuku.
There is also a legal dimension. Under Edo-period law, non-samurai such as merchants, artisans, and townspeople were permitted to own a wakizashi for self-defense, but they were forbidden from wearing a katana. This is why you will see museum inventories from the period that are almost entirely wakizashi — it was the sword the whole society could own.
For a modern collector, the wakizashi is the most practical second piece to own. It displays cleanly next to a katana on a two-tier stand, it fits in apartments and offices where a 40-inch mounted katana would overwhelm the wall, and shorter blades are more forgiving for indoor suburi (air cutting) practice. Browse current stock in our wakizashi collection.
3. The tanto — the dagger of the samurai class
A tanto is a single-edged blade under 30 centimeters (less than about 12 inches). Unlike the katana and wakizashi, it is often straight or has only a very slight curve. Functionally it sits closer to a fighting knife than a sword. Its original purpose was armor piercing at grappling range: when two armored warriors closed to the point where a long blade could not be brought into play, the tanto came out of the waist and went into the gaps between lacquered plates. A specialized armor-piercing subtype, the yoroi-doshi, has a heavy thick spine built for that exact job.
The tanto also had a non-combat life. Women of the samurai class carried a smaller variant called a kaiken for self-defense. Pregnant women carried one for symbolic protection. In more modern martial arts, the tanto remains the core weapon of tantojutsu and is the knife-form analog in aikido and some koryu curricula.
For collectors, a tanto is the easiest Japanese blade to start with. It is the smallest, the least expensive at a given steel grade, and the simplest to store. It is also a good gift piece — a single polished tanto on a small stand reads as serious without dominating a room. See our tanto collection for examples across steel grades.
4. The tachi — the katana's older, longer ancestor
The tachi is the most frequently misidentified Japanese sword, because to a casual eye it looks like a longer, curvier katana. It is in fact older, and there is a quiet technical test to tell them apart. A tachi is worn edge-down, slung from the waist by two cords, the way a European cavalry saber hangs. A katana is worn edge-up, thrust through the sash. Because the smith always signed the outward-facing side of the tang, a tachi signature sits on the opposite side of the tang from a katana signature. That is how museums tell a re-mounted tachi from a katana that was ground down.
Tachi were the dominant battlefield swords of the Heian and Kamakura periods (roughly 9th through 14th century), when warfare in Japan was fought primarily on horseback. A longer, more deeply curved blade is the correct shape to cut from the saddle. As Japanese warfare shifted to foot combat during the Muromachi period, the tachi was gradually re-mounted into katana fittings, and the tachi as a battlefield form faded. Surviving examples are almost all in institutional or elite private collections.
Modern tachi reproductions are a niche within a niche. They appeal to collectors attracted specifically to the older, more cavalry-like silhouette and to anyone building a timeline display across Japanese sword history. See our tachi collection for current pieces.
Other blade forms you will run into
Four types cover the great majority of what is sold and owned today, but Japanese sword taxonomy has more categories, and they come up often enough that a collector should know the vocabulary.
Nodachi (or odachi) means "great field sword." These are enormous blades, often 90 to 150 centimeters, designed to be carried across the back and used on the open battlefield to cut down cavalry. They are rarely reproduced because few people have the space, budget, or arm strength to use one. Naginata is a polearm — a curved sword blade mounted on a long wooden shaft, associated historically with warrior monks and with female members of the samurai class who defended households. Kodachi is a short tachi, sitting between a wakizashi and a katana in length; it was the original "short sword" carried by imperial guards before the wakizashi form crystallized.
One last category worth knowing: shirasaya. A shirasaya is not a blade type — it is a mounting. It is a plain, unlacquered wooden handle and scabbard, used for long-term storage of a blade that is not being carried or displayed in full mount. Any of the blade types above can be mounted in shirasaya, and some collectors prefer shirasaya for the austere aesthetic. Our shirasaya collection shows what this looks like in practice.
How to choose the right type for what you actually want to do
The fastest way to end up with the wrong sword is to pick based on looks alone. These are the practical rules of thumb we give customers.
If you want the iconic samurai sword on a single stand, buy a katana. It is the default for a reason. Focus your decision on steel grade rather than blade type.
If you want a matched pair on a two-tier stand, buy a daisho — a katana plus a matching wakizashi in the same theme. This is the traditional way to display a samurai's blades and it tells a stronger visual story than any single sword.
If you train iaido, iaijutsu, or battodo, you do not want a sharpened katana for drawing drills. You want an iaito — a purpose-built training sword that is the same weight, length, and balance as a shinken but is not edge-sharpened, so it is safe for solo practice. See our iaido training swords.
If you are a history-driven collector, a tachi or a tanto will serve you better than a fifth katana. They each occupy a different era and a different military role, and they deepen a collection rather than repeating it.
If you are buying a first piece, a gift, or a small starter, a tanto is the lowest-friction choice. It is the smallest, the most affordable at a given steel tier, and the easiest to store.
Once you have picked the type, the second decision is the steel. Steel tier determines whether a blade is decorative only, cutting-capable, or top-grade cutting. For a full breakdown of how 1045, 1060, 1095, T10, and traditional tamahagane compare, see our companion piece on 1045 vs 1095 steel and on tamahagane, the traditional Japanese jewel steel.
Frequently asked questions
Is a wakizashi just a short katana? Physically they look similar, but they are different tools. A wakizashi is not a backup weapon — it is a specialized close-quarters blade with its own techniques and its own legal and social context, especially during the Edo period when only samurai could wear a katana but most classes could own a wakizashi.
Why is a tachi worn edge-down? Because it was a cavalry weapon. A rider drawing a blade from a saddle gets a cleaner, faster motion from a blade hung edge-down on two cords than from a blade thrust through a waist sash. The katana's edge-up carry became standard only after warfare moved to the ground and the drawing cut (iaido) became a core technique.
What exactly is a daisho? A matched set of a katana and a wakizashi mounted in the same theme — same tsuka wrap color, matching tsuba, coordinated saya. In the Edo period only samurai class members were permitted to wear a daisho, which made it the visible marker of samurai status.
Are modern reproductions battle-ready or decorative? It depends entirely on the steel and the heat treatment. A 1045 carbon-steel entry blade is almost always decorative only. 1060 carbon steel is cutting-capable on soft targets such as tatami mats. 1095 high-carbon steel, especially clay tempered, performs as a serious cutting blade. This is covered in detail in our steel guide.
What blade length is right for a first katana? The traditional guideline is that the blade (nagasa) should match the distance from your wrist to roughly your hipbone, which for most adults lands at 27.5 to 28.5 inches. Taller practitioners go longer. For display only this matters less; for any cutting or drawing practice it matters a lot.
Do I need a license to own a Japanese sword? Outside of Japan, ownership rules vary by country and state. Carry and transport are the areas most often regulated; home ownership of a reproduction sword is typically legal in most of the United States, Canada, the UK, and most of Europe. Inside Japan, every real nihonto requires a torokusho registration certificate issued by the Agency for Cultural Affairs, and unregistered blades cannot be owned legally. Always check your local law before ordering.
What is a tsuba and does it differ by blade type? The tsuba is the guard at the base of the blade that separates the handle from the edge. Katana and wakizashi tsuba share similar shapes and are sometimes matched as a pair in a daisho. Tachi tsuba are typically smaller and more decorative. Tanto may have a very small tsuba, no tsuba at all (aikuchi mounting), or a slim collar. Our tsuba collection shows current options.
Can I mix blade types in one order? Yes. A common first purchase for a serious collector is a katana plus a wakizashi as a daisho, or a katana plus a matching tanto for a three-piece display. Browse the full samurai swords overview for every type in one place.
The through-line
Every Japanese blade type in this guide exists because someone, at some point in Japanese military history, needed a weapon for a problem the existing swords could not solve. Tachi solved mounted combat. Katana solved foot combat and the fast draw. Wakizashi solved indoor fighting and social legality. Tanto solved armor piercing at grappling range. Understanding that lineage is what turns a decorative sword on a wall into an object with history behind it. That is the difference between owning a sword and owning a nihonto.
When you are ready to pick one, start from intent — what you actually want to do with the blade — and let the type flow from there. Steel grade, fittings, and theme come after. For the full inventory across all types and steel grades, visit the samurai sword collection.
This article is part of our ongoing series on Japanese sword craft. For the deeper material story behind these blades, see our guide to tamahagane, the traditional jewel steel. For a broader historical arc across the four eras of Japanese sword-making, see our samurai sword history page.
Written by the Handmade Sword Editorial Team. Last updated April 2026.