The length of a short sword can vary depending on cultural, historical, and contextual factors. As the term "short sword" is a general designation, there is no fixed length that universally defines it. However, in a broad sense, a short sword typically has a blade length ranging from approximately 30 to 60 centimeters (12 to 24 inches).

The specific length of a short sword can be influenced by factors such as the culture of origin, the time period, and the purpose of the sword. For example, the Roman gladius, a renowned short sword, typically had a blade length of around 50 to 65 centimeters (20 to 25 inches). On the other hand, the Japanese wakizashi, another type of short sword, usually had a blade length of around 30 to 60 centimeters (12 to 24 inches).

It's important to note that the definition of a short sword is relative and can vary based on the context. What may be considered a short sword in one culture or time period might be regarded as a standard or long sword in another. It's always best to refer to specific cultural or historical references when discussing the length of a particular short sword.