The length of a Tai Chi sword, also known as a Taijijian or Tai Chi Jian, can vary depending on the specific style, practitioner, and personal preferences. However, there are some general guidelines for the length of a Tai Chi sword.

On average, a Tai Chi sword is typically around 36 to 40 inches (91 to 102 centimeters) in length. This measurement includes both the blade and the handle. However, it's important to note that the exact length can vary based on individual preferences, body proportions, and the specific requirements of the Tai Chi style being practiced.

The length of a Tai Chi sword is typically chosen to ensure proper balance and maneuverability while performing the graceful and flowing movements of Tai Chi sword forms. It should allow for comfortable handling and precise control during practice.

When selecting a Tai Chi sword, it is recommended to consult with a qualified instructor or experienced practitioner who can provide personalized guidance based on your needs and body characteristics. They can assist in selecting a sword with an appropriate length and weight that suits your practice and facilitates the desired techniques and movements.

It's worth noting that the length mentioned here is an average range, and there may be variations depending on individual preferences, regional traditions, and specific Tai Chi styles.

In summary, the length of a Tai Chi sword is typically around 36 to 40 inches (91 to 102 centimeters), but the exact length can vary based on personal preferences, body proportions, and the specific requirements of the Tai Chi style. Consulting with a qualified instructor is advisable for proper guidance in selecting a Tai Chi sword.