Tons (t) to US Hundredweights (cwt-us) conversion

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.

What is the US Hundredweight?

The US hundredweight, also called the short hundredweight or cental, is a unit of mass used in North American commerce and agriculture for bulk commodities such as grain, livestock, and cattle feed.

Definition

The US hundredweight is defined as exactly 100 avoirdupois pounds:

$$1\ \text{cwt} = 45.3592\ \text{kg}$$

Precisely, 1 US cwt = 100 lb = 45.359237 kg exactly. Twenty US hundredweights make one US (short) ton of 2000 lb.

Origin and History

The hundredweight has medieval English origins, where a "hundred" of weight varied by commodity and region. North American usage settled on a clean 100-pound unit—hence "short"—diverging from the British long hundredweight of 112 pounds.

Law and Notable Facts

In the United States the hundredweight is legally 100 lb and is standard in commodity pricing; agricultural products such as milk, hogs, and grain are still quoted per hundredweight (cwt). The abbreviation "cwt" uses the Roman numeral C for one hundred.

Real-World Examples and Conversions

Milk is often priced per hundredweight; for example, "$20 per cwt" means per 100 lb (≈45.4 kg). Twenty US hundredweights equal one short ton (907.18 kg). One US cwt is lighter than one UK cwt (≈50.80 kg).