The weight of a Tai Chi sword can vary depending on several factors, including the specific design, materials used, and the preferences of the practitioner. Generally, a Tai Chi sword is relatively lightweight compared to other types of swords.

A typical Tai Chi sword, often referred to as a jian, can weigh anywhere from 1 to 2.5 pounds (0.45 to 1.1 kilograms). The specific weight can be influenced by factors such as the length and thickness of the blade, the type of steel used, and the construction of the handle and fittings.

Tai Chi swords are typically designed to be well-balanced and maneuverable, allowing for fluid and precise movements in Tai Chi practice. The lightweight nature of the sword facilitates the graceful and flowing techniques characteristic of Tai Chi martial arts.

It's worth noting that the weight of a Tai Chi sword can vary between individual swords and the preferences of practitioners. Some may prefer a slightly heavier sword for training purposes, while others may opt for a lighter sword for increased speed and ease of handling.

In summary, the weight of a Tai Chi sword, or jian, typically falls between 1 to 2.5 pounds (0.45 to 1.1 kilograms). The specific weight can vary based on the design, materials used, and individual preferences of practitioners.