The length of a Jian sword can vary depending on the specific design, historical period, and individual preferences. However, as a general guideline, the length of a Jian sword typically ranges from 70 to 100 centimeters (27.5 to 39.4 inches).

The Jian is a traditional Chinese straight sword with a double-edged blade. It is known for its balanced and agile nature, emphasizing quick and precise movements in combat.

The length of the Jian is measured from the tip of the blade (kissaki) to the notch at the base of the blade (habaki). The overall length includes the blade and the hilt (handle). While there is a range in lengths, most Jian swords fall within the 70-100 centimeter range, but longer and shorter variations exist.

The specific length of a Jian sword can be influenced by factors such as the intended use, regional styles, personal preferences, and the historical period it represents. Variations in length can cater to different combat techniques, individual physique, and historical context.

If you are specifically interested in a particular Jian sword or its dimensions, it is advisable to consult reputable sources or experts who specialize in Chinese swords or historical weaponry for more precise information.