What is a Kunai Knife?

In ancient Japan, peasants used kunai as a multitasking gardening tool and stonemasons used it as a masonry tool. Today, it is known to the world as a throwing blade.

This blog post seeks to help you understand and appreciate this blade even more by learning about its history, features, and uses.

Kunai Knife

General Description

The kunai is a Japanese knife best used for throwing and thrusting. It has the following characteristics:

It can stab, cut or thrust with startling accuracy; It has a sharp blade on both sides of the edge; Its handle is longer than usual knives to compensate for its weight; The curve at the tip helps it swing back easily for quick follow-ups.

In comparison, a typical dagger is about 40 centimeters and Ninja kunai is normally between 20 to 60 centimeters.


The kunai is a Japanese gardening and masonry tool that comes in the shape of a dagger. It has a narrow pointed tip, like an arrowhead. 

It was used primarily for masonry then, whereas it was used as a gardening tool by ordinary folks at the time. As it uses the edges to break plaster and wood, it remains unsharpened because it is equipped with a soft iron blade. Prying and digging holes were done with the weapon.



The blades are straight and shaped like leaves. The blade has a long and flat cutting edge. It also has two sharp edges which are longer than usual. The kunai is heavier than most knives due to its thick blade.


On the pommel and at the end of the handle is a ring for attaching ropes. In other words, having a circular hole at the end of a tool isn’t just for hanging it up after work; it has practical purposes. The kunai’s long handle is also has a hole for attaching ropes. 



An interesting fact about kunai is you can use them to climb hills and mountains. For support and grip, it acts as a piton or a hook.


Despite not being designed for throwing, the kunai knife is an excellent knife for it. Since it is lightweight, small, and pointed, it is easy to toss from a distance. It is designed with a finger ring at the end to provide a sure grip while throwing. 

When the tool is thrown, the ring also ensures good control over it. So, it isn’t uncommon to see this tool thrown in various games and contests around the world as a throwing knife. 

This tool is additionally made more lethal and precise by the rope that is attached to the other end of the ring. In addition to facilitating a better retaking, it also ensures stability, so the knife can remain parallel to the ground while flying. In general, the smaller kunai are more convenient to throw.

Stone and Masonry Work

A kunai is viewed as a great tool for masonry. Rocks & small stones can be broken easily with it, as well as items can be plastered. Unlike razor blades, kunai does not have sharpened edges, so there is less risk of injury.


A kunai is used in this way in its primitive form. A farmer would use this tool to dig in the garden in ancient times. Many regions still use it for gardening, farming, and even digging holes today. The leafy shape of the blades allows digging into the deeper ground more easily. The user can also easily complete tough tasks due to it.

Final Verdict

In a nutshell, the kunai is a small, leaf-shaped blade that comes in handy for various purposes. Despite looking primitive and unrefined, you can always rely on this handy tool due to its sturdiness and practicality.

Leave a Comment

Your email address will not be published. Required fields are marked *