Understanding UK Hundredweights to US Hundredweights Conversion
The UK hundredweight (cwt-uk), or long hundredweight, is defined as 112 pounds, while the US hundredweight (cwt-us), or short hundredweight, is 100 pounds. The two share a name but differ by 12 pounds, so the UK unit is exactly 1.12 times the US unit. This conversion is essential in transatlantic trade to avoid costly errors when the same word "hundredweight" refers to two different masses.
Conversion Formula
To convert UK Hundredweights to US Hundredweights, multiply by this factor:
Step-by-Step Example
Convert 25 UK Hundredweights to US Hundredweights.
How to Convert UK Hundredweights to US Hundredweights
Reconcile the long and short hundredweights with a single factor.
- Take the UK hundredweight value: for example, 25 cwt-uk.
- Multiply by 1.12: because the UK unit (112 lb) is 1.12 times the US unit (100 lb).
- Calculate: .
- State the result: 25 UK hundredweights equal 28 US hundredweights.
UK Hundredweights to US Hundredweights conversion table
| UK Hundredweights (cwt-uk) | US Hundredweights (cwt-us) |
|---|---|
| 0 | 0 |
| 1 | 1.12 |
| 2 | 2.24 |
| 3 | 3.36 |
| 4 | 4.48 |
| 5 | 5.6 |
| 6 | 6.72 |
| 7 | 7.84 |
| 8 | 8.96 |
| 9 | 10.08 |
| 10 | 11.2 |
| 15 | 16.8 |
| 20 | 22.4 |
| 25 | 28 |
| 30 | 33.6 |
| 40 | 44.8 |
| 50 | 56 |
| 60 | 67.2 |
| 70 | 78.4 |
| 80 | 89.6 |
| 90 | 100.8 |
| 100 | 112 |
| 150 | 168 |
| 200 | 224 |
| 250 | 280 |
| 300 | 336 |
| 400 | 448 |
| 500 | 560 |
| 600 | 672 |
| 700 | 784 |
| 800 | 896 |
| 900 | 1008 |
| 1000 | 1120 |
| 2000 | 2240 |
| 3000 | 3360 |
| 4000 | 4480 |
| 5000 | 5600 |
| 10000 | 11200 |
| 25000 | 28000 |
| 50000 | 56000 |
| 100000 | 112000 |
| 250000 | 280000 |
| 500000 | 560000 |
| 1000000 | 1120000 |
What is the UK Hundredweight?
The UK hundredweight, also called the long hundredweight, is a British imperial unit of mass historically used for coal, agricultural produce, and other bulk goods.
Definition
The UK hundredweight is defined as exactly 112 avoirdupois pounds:
Precisely, 1 UK cwt = 112 lb = 8 stone = 50.80234544 kg exactly. Twenty long hundredweights make one long (imperial) ton of 2240 lb.
Origin and History
The value of 112 pounds arose so that the hundredweight would divide evenly into quarters of 28 lb and into stones of 14 lb, easing trade calculations. This "long" hundredweight became standard in Britain and the Commonwealth, in contrast to the North American 100-pound "short" hundredweight.
Law and Notable Facts
Under the British imperial system the hundredweight is legally 112 lb. Its neat divisibility into 4 quarters, 8 stone, or 16 pieces of 7 lb made it convenient before decimalization; it remains recognized for certain traditional trades.
Real-World Examples and Conversions
A traditional bag of coal was often one hundredweight (112 lb, ≈50.8 kg). Twenty UK hundredweights equal one long ton (1016.05 kg). The UK cwt is about 12% heavier than the US cwt of 100 lb (≈45.36 kg).
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:
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).
Frequently Asked Questions
How many US hundredweights equal one UK hundredweight?
Exactly 1.12 US hundredweights, because 112 pounds divided by 100 pounds equals 1.12.
Why do the UK and US hundredweights differ?
The UK long hundredweight is 112 lb (8 stone), while the US short hundredweight was set at a round 100 lb, a 12% difference.
How do I convert US hundredweights back to UK hundredweights?
Multiply the US hundredweight value by 0.8928571, the reciprocal of 1.12.
Why does this conversion matter in trade?
Because both are called "hundredweight," confusing them can cause a 12% error in shipping weights, pricing and contracts.
Which industries still use hundredweights?
Agriculture and commodity markets in the UK and US still quote some goods, such as grain and livestock, in hundredweights.
People also convert
Complete UK Hundredweights conversion table
| Unit | Result |
|---|---|
| Micrograms (mcg) | 50802350000 mcg |
| Milligrams (mg) | 50802350 mg |
| Grams (g) | 50802.35 g |
| Kilograms (kg) | 50.80235 kg |
| Metric Tonnes (mt) | 0.05080235 mt |
| Carats (ct) | 254011.7 ct |
| Ounces (oz) | 1792 oz |
| Pounds (lb) | 112 lb |
| Stones (st) | 8 st |
| Tons (t) | 0.056 t |
| Long Tons (long-ton) | 0.05 long-ton |
| Troy Ounces (ozt) | 1633.333 ozt |
| Grains (gr) | 784000 gr |
| US Hundredweights (cwt-us) | 1.12 cwt-us |
| Slugs (slug) | 3.481066 slug |