Metric Ton (t)
The metric ton, or tonne, symbol t, equals 1,000 kilograms. Introduced with the metric system in the 18th century, it serves as a practical unit for large masses, especially in trade, agriculture, and industry. Unlike the imperial ton, the metric ton is an SI unit, supporting global standardization. It is frequently applied in shipping, resource management, and heavy industry. Its clear definition simplifies calculations and facilitates international communication, making it fundamental in commerce and engineering.
Stone (st)
The stone (st) is a traditional British unit of mass, standardized as 14 pounds, which is roughly 6.35 kilograms. Its history dates back to medieval England, when stones of different weights were used as standards in trading. While most countries now use kilograms for official measurements, the stone is still frequently used in the UK and Ireland, especially to state a person’s body weight. Its ongoing use highlights both cultural tradition and the continued relevance of non-metric measures in everyday life.