Troy Ounces (ozt) to Tons (t) conversion

What is the Troy Ounce?

The troy ounce is a unit of mass used almost exclusively for precious metals such as gold, silver, platinum, and palladium. It is the standard weight quoted on global bullion markets.

Definition

The troy ounce is defined as exactly 480 grains, which equals 31.1034768 grams:

$$1\ \text{ozt} = 0.0311035\ \text{kg}$$

By definition, 1 troy ounce = 480 grains = 31.1034768 g exactly, and 12 troy ounces make one troy pound (≈373.242 g). Note that the troy ounce is heavier than the more familiar avoirdupois ounce (≈28.3495 g).

Origin and History

The troy system takes its name from the French market town of Troyes, a major medieval trading hub. It descends from the Roman monetary system and was standardized in England for coinage and precious metals, later adopted across Europe and the English-speaking world.

Law and Notable Facts

The troy ounce remains the legal basis for bullion trading and coinage weights; in the United States it is codified for precious-metal transactions. A curious consequence is that a pound of gold (troy, ~373 g) actually weighs less than a pound of feathers (avoirdupois, ~454 g).

Real-World Examples and Conversions

A standard Good Delivery gold bar weighs about 400 troy ounces (≈12.4 kg). A 1 oz American Gold Eagle contains one troy ounce (31.1 g) of gold. When gold is quoted at "$2,000 per ounce," that means per troy ounce, not the avoirdupois ounce.

What is Tons?

Tons are a unit of mass, primarily used for measuring heavy objects. However, there are different types of tons, each with a slightly different weight. The most common are the metric ton, the short ton (or US ton), and the long ton (or UK ton). This document aims to give more insights for each of the ton measure.

Types of Tons

• Metric Ton (tonne): The metric ton, also known as a tonne, is defined as 1,000 kilograms.
• Short Ton (US Ton): The short ton, or US ton, is defined as 2,000 pounds.
• Long Ton (UK Ton or Imperial Ton): The long ton, also known as the UK ton or imperial ton, is defined as 2,240 pounds.

Conversion Between Tons

Here's how to convert between the different types of tons:

• 1 metric ton = 1,000 kg ≈ 2,204.62 lbs ≈ 1.102 short tons ≈ 0.984 long tons
• 1 short ton = 2,000 lbs ≈ 907.185 kg ≈ 0.907 metric tons ≈ 0.893 long tons
• 1 long ton = 2,240 lbs ≈ 1,016.05 kg ≈ 1.016 metric tons ≈ 1.12 short tons

$$1 \text{ metric ton } = 1000 \text{ kg}$$

$$1 \text{ short ton } = 2000 \text{ lbs}$$

$$1 \text{ long ton } = 2240 \text{ lbs}$$

Origin and History

The term "ton" has its roots in the Old English word "tun," which referred to a large cask or barrel. Over time, it evolved to represent a unit of weight based on the capacity of such a barrel, typically used for wine or other goods. The different types of tons arose due to variations in measurement systems between countries and industries.

Real-World Examples

• Shipping: Cargo ships often measure their carrying capacity in metric tons.
• Mining: The extraction and trade of ores, like iron ore, are frequently quantified in metric tons.
• Construction: Materials like concrete and steel are often ordered and priced by the ton.
• Agriculture: Crop yields, such as wheat or corn, can be measured in tons, especially on a large scale.
• Waste Management: Municipal waste and recycling amounts are often reported in tons.

Interesting Facts

• The metric ton is part of the International System of Units (SI).
• The term "tonnage" is often used in the shipping industry to refer to a vessel's cargo-carrying capacity, although it doesn't always directly correspond to weight in tons. Instead, it can relate to volume or other measures.
• The abbreviation for metric ton is "t," while short ton is often abbreviated as "ST" and long ton as "LT" to avoid confusion.

Notable Associations

While no specific law or person is directly associated with the ton as a unit of measurement, its use is deeply embedded in various industries and regulations related to trade, transportation, and commerce. For example, international trade agreements often specify quantities of goods in metric tons.