A long ton, also known as a long hundredweight, is a unit of weight commonly used in the United Kingdom. It is equivalent to 1,016 kilograms or 2,240 pounds. The long ton is primarily used in industries such as shipping and construction, where precise weight measurements are essential. The long ton differs from other ton measurements, such as the short ton, which is used in the United States and equals 907.185 kilograms or 2,000 pounds. Understanding these differences is important for international trade and commerce, especially when dealing with heavy goods and materials like steel or coal.