Question 1

What is a hundredweight?

Accepted Answer

US (short) hundredweight = 100 lbs (45.36 kg). UK (long) hundredweight = 112 lbs (50.8 kg). Used in commodities.

Question 2

Why are US and UK hundredweights different?

Accepted Answer

UK kept traditional 112 lbs (8 stone). US simplified to 100 lbs. Both related to ton definitions.

Question 3

Is there a difference between mass and weight?

Accepted Answer

Yes! Mass (kg) is amount of matter, constant everywhere. Weight (newtons or pounds-force) is gravitational force on mass, varies by location.

Question 4

Why do jewelry and precious metals use different units?

Accepted Answer

Troy system (troy ounces, pennyweights) has been used for precious metals since the Middle Ages. 1 troy oz = 31.1g vs 1 regular oz = 28.35g.

cwt to kg Converter

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