The American measurement system actually is "European" because it came from England, although Americans changed it around a bit. It's a collection of very arbitrary units, such as 3 feet in a yard, 5280 feet in a mile, 32 ounces in a gallon, etc. In England, it's 40 ounces in a gallon, but the ounces are a tiny bit different. Other places in Europe and in North and South America, including Canada and Mexico (actually almost everywhere in the world EXCEPT the U.S.) use the metric system. A meter is currently defined as {| ! 1983 ! align="left" | Length traveled by light in vacuum during 1 / 299 792 458 of a second. |
All units are multiples of 10, such as:
1000 millimeters = meter
1000 meters = kilometer Way easier to remember. |}
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In the US, the most commonly used system of measurement is the imperial system. This system uses units such as inches, feet, and pounds, whereas the metric system uses units like meters, kilometers, and kilograms.
Imperial - Mostly based off of British influence I believe. Miles, pounds, gallons, fahrenheit. Anyone in any sort of scientific field uses metric, however.
Their gallons, quarts and pints are US which are smaller than Imperial.
Metric measurement is measurement made using units as defined under the metric system.
1.5 liters is equal to 1500 milliliters in metric measurement.
The United States is the country where the metric system is not the main system of measurement. The US primarily uses the Imperial system for measurements such as distance, weight, and volume.
Metric is an adjective and refers to a system of measurement.
A metric unit of measurement for mass is called a gram.