Published Feb 5, 2026 4 min read

Introduction

Hundredweight, abbreviated as CWT, is a standard unit of weight measurement that plays a crucial role in global trade, particularly in commodities and logistics. The term "hundredweight" can be slightly misleading, as its exact weight varies depending on the region. In the United States, a hundredweight equals 100 pounds, while in the United Kingdom, it equals 112 pounds. This unit is widely used in industries such as agriculture, logistics, and commodity trading to standardise measurements for bulk goods.

What is hundredweight?

Hundredweight (CWT) is a unit of weight measurement primarily used in commodity trading and logistics to simplify the pricing and transportation of goods. While the term suggests a weight of 100 pounds, its actual value depends on the region.

  • In the United States: One hundredweight equals 100 pounds, also referred to as the "short hundredweight."
  • In the United Kingdom and some Commonwealth countries: One hundredweight equals 112 pounds, known as the "long hundredweight."

The difference arises from historical variations in measurement systems. Despite these differences, the hundredweight remains a crucial unit for industries dealing with bulk goods such as grains, metals, and livestock.

For example, in the agricultural sector, farmers and traders commonly use this unit to price and ship crops like wheat, barley, and corn. Similarly, the logistics industry employs hundredweight to calculate freight charges for large shipments, ensuring consistency in global trade.

History of hundredweight (CWT)

The origins of the hundredweight can be traced back to medieval England, where trade practices relied on various weight systems. The term "hundredweight" originally referred to a weight of 100 pounds. However, over time, the UK adopted a slightly heavier standard of 112 pounds to align with its traditional measurement system, which included units like stones (14 pounds).

When the United States established its own measurement standards, it simplified the hundredweight to 100 pounds, creating what is now known as the short hundredweight. Despite these regional differences, the hundredweight has endured as a reliable unit for measuring and trading bulk commodities globally.


 

Examples of hundredweight

Hundredweight is widely used in industries where bulk goods are traded or transported. Here are some practical examples:

  • Agriculture: A farmer selling wheat might price it at Rs. 2,000 per hundredweight, with each CWT representing 100 pounds in the US or 112 pounds in the UK.
  • Livestock trading: Cattle prices are often quoted per hundredweight, allowing buyers and sellers to standardise costs.
  • Commodity trading: Metals like copper or aluminium are frequently measured in hundredweight to facilitate trade agreements.

These examples highlight how hundredweight simplifies transactions and ensures consistency across industries and regions.

Common uses of hundredweight in various industries

Hundredweight is a versatile unit of measurement with applications across multiple sectors:

  1. Agriculture: Farmers and traders use hundredweight to measure and price crops such as wheat, corn, and barley.
  2. Commodity trading: Bulk commodities like metals, grains, and livestock are traded using hundredweight as a standardised unit.
  3. Logistics: Freight companies calculate shipping costs based on the weight of goods in hundredweight, ensuring accurate pricing and efficient transportation.

By standardising measurements, hundredweight facilitates seamless transactions and logistics operations across industries.

Calculating and converting hundredweight

Calculating and converting hundredweight is straightforward with a basic understanding of its regional variations:

  1. US hundredweight (short CWT): 1 CWT = 100 pounds.
  2. UK hundredweight (long CWT): 1 CWT = 112 pounds.

Conversion examples:

  • To kilograms: Multiply the hundredweight by 45.36 (for US CWT) or 50.8 (for UK CWT).
  • To metric tons: Divide the hundredweight by 22.046 (for US CWT) or 19.684 (for UK CWT).

For instance, if you have 5 US CWT of a commodity, its weight in kilograms would be:
5 x 45.36 = 226.8 kg.

Accurate conversions are crucial for international trade, where different regions may use varying standards.

Conclusion

Hundredweight (CWT) is a vital unit of measurement in global trade, agriculture, and logistics. Its regional variations—100 pounds in the US and 112 pounds in the UK—make it essential for traders and businesses to understand and accurately calculate weights and conversions. By standardising measurements, hundredweight ensures consistency and fairness in pricing and transportation, fostering smoother trade operations worldwide.


For more insights into trading and financial strategies, explore these resources:

Frequently Asked Questions

What is the difference between short and long hundredweight?

The short hundredweight, used in the United States, equals 100 pounds. In contrast, the long hundredweight, used in the United Kingdom, equals 112 pounds. These variations reflect the historical differences in weight measurement systems between the two regions. Both units are widely used in industries like agriculture and commodity trading to standardise weight measurements.

How is hundredweight used in commodity trading?

In commodity trading, hundredweight is a standard unit for measuring and pricing bulk goods such as grains, livestock, and metals. For example, traders may quote the price of wheat or copper per hundredweight to ensure consistency and transparency in transactions. This practice simplifies trade agreements, especially in international markets.

Why does the UK hundredweight equal 112 pounds?

The UK hundredweight, equalling 112 pounds, originates from the traditional British measurement system, which used units like stones (1 stone = 14 pounds). To align with this system, the UK adopted a heavier hundredweight standard. This differs from the US system, which standardised the hundredweight to 100 pounds for simplicity.


 

Is hundredweight still used in modern logistics?

Yes, hundredweight remains relevant in modern logistics, particularly in industries that handle bulk goods. Freight companies often calculate shipping costs based on the weight of goods in hundredweight. Its continued use ensures consistency and simplifies operations in global trade and transportation.


 

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