The width of a wakizashi, which is a traditional Japanese short sword, can vary depending on the specific sword and its construction. However, in general, the width of a wakizashi blade is typically narrower compared to that of a katana, the longer companion sword.

The width of a wakizashi blade is usually around 2.5 to 3 centimeters (1 to 1.2 inches) at its widest point. This narrower width allows for greater agility and maneuverability in close-quarters combat, which was the primary purpose of the wakizashi.

It's important to note that these measurements are approximate and can vary depending on the individual sword, historical period, and specific blade smith. Additionally, the width can also vary along the length of the blade, with some sections being narrower or wider than others.

If you are referring to the overall width of the wakizashi, including the handle (tsuka) and guard (tsuba), it will typically be wider due to the presence of the handle and fittings.

In summary, the width of a wakizashi blade is generally narrower compared to a katana, with measurements around 2.5 to 3 centimeters (1 to 1.2 inches) at its widest point.