The weight of a dao, also known as a Chinese broadsword or saber, can vary depending on factors such as its size, design, and materials used in construction. Traditional dao swords were typically made from steel and had some variations in weight based on their specific purpose. However, it's important to note that there is no standardized weight for all dao swords, and individual swords can vary significantly.

On average, a dao sword would typically weigh between 1.2 to 1.8 kilograms (2.6 to 4 pounds). However, this is just a general range, and the weight can be lighter or heavier depending on the length, blade thickness, and other design factors.

It's worth mentioning that the weight of a dao sword can affect its handling and performance. Lighter swords may allow for quicker strikes and greater maneuverability, while heavier swords can deliver more power in each swing but may require more strength and control to wield effectively.

If you are looking for a specific dao sword, it's advisable to consult the manufacturer or seller for the exact weight specifications of the particular sword you are interested in, as individual swords can have variations in weight even within the same style or design.