Find things around your house that weigh an ounce if you want to learn more about the weight of smaller things. You might be surprised by how many everyday things weigh an ounce. A lot of things around the house weigh about an ounce, like food, coins, and other things.
Things that often weigh an ounce
Get a small kitchen scale or a postal scale if you want to know how much something weighs. If you want to start with money, you’ll see that an ounce is equal to 10 pennies or 5 quarters.
A pencil and about 28 paper clips each weigh about an ounce. A slice of whole-grain bread is one of the most common things that weigh an ounce. AA batteries, six sheets of writing paper, and a CD are some other things that weigh this much.
How Ounces Came to Be
During the Middle Ages, the ounce became a unit of measure in Great Britain. Measurements were not always the same, and the British changed the number of ounces in a pound more than once. By 1266, a pound weighed 12 ounces, but by 1304, a pound of medicine weighed 12 ounces and a pound of other things weighed 15 ounces.
Soon after that, 16 ounces became the standard weight for a pound. If you’ve ever wondered why “oz” is the abbreviation for “ounces” instead of something that seems to make more sense, it’s because “oz” comes from the Italian word “onza,” which means “ounce.”
There are many kinds of ounces.
There are different kinds of ounces today, as if the history of ounces and how different numbers of ounces made up a pound at different times wasn’t confusing enough. These different kinds of ounces are used to measure mass in different ways.
We use an avoirdupois ounce to measure dry goods, while a fluid ounce is used to measure the amount of liquid. Even though they use different metric measurements, they are almost the same size.
The troy ounce is the other kind of ounce. It is used to measure the weight of precious metals and is slightly bigger than the other kinds.
Different ways to measure mass and volume
In the standard system of measurement, ounces are not the only way to measure the weight of solid things. Pounds and tonnes are also used. In the metric system, grammes and their multiples, such as kilogrammes, are used to measure mass.
In the standard system, cups, pints, quarts, and gallons are all other ways to measure liquids. In the metric system, the volume of liquids is measured in litres, including millilitres and kiloliters, which are multiples and fractions of litres.
How many ounces are in other units of measure
Many other countries use the metric system to measure things, which is different from the standard system we use in the United States. A fluid ounce is about 29.574 millilitres, while an avoirdupois ounce is about 28.349 grammes. About 31.103 grammes are in a troy ounce. An avoirdupois ounce is 0.0625 of a pound, while a fluid ounce is 0.0625 of a pint, 0.03125 of a quart, or 0.007812 of a gallon.