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.
Ounce (oz)
The ounce, symbol oz, is an imperial unit of mass derived from the Roman uncia, meaning “one-twelfth” of a pound. Standardized over centuries in England and later in the United States, one ounce is equivalent to 28.3495 grams. The ounce continues to be used for measuring food, postal items, and precious metals in regions employing imperial or US customary units. Its historical background and ongoing applications sustain its relevance alongside metric units.