Tonne: The tonne, also known as the metric ton, is a unit of mass in the metric system. It is equal to 1,000 kilograms or 1,000,000 grams. It is widely used internationally for measuring larger quantities of mass and is equivalent to approximately 2,204.62 pounds.
Stone (US): While the stone is not commonly used in the United States, it is equivalent to 14 pounds (approximately 6.35 kilograms). In some contexts, people may refer to their weight in stones.