The standard king size is 78 x 72 inches.

No, a king size bed is not the same as a double bed. They are generally wider and more spacious compared to a double bed.

While a standard king size bed (78 inches X 72 inches) is the biggest bed size available, there is always option to get a custom size bed made to order.

A standard king size bed is 72 inches wide and 78 inches long, while a queen is 60 inches wide and 78 inches long. To simplify, king size beds are the same length as queen beds but 12 inches wider, making their surface area more than queen size beds.