Unit Definition

What is a unit in science?

The meter, yard, inch, and centimeter are all units of length
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A unit is any standard used for comparison in measurements. Unit conversions allow for measurements of a property that have been recorded using different units (e.g., centimeters to inches).

Unit Examples

The meter is one standard of length. A liter is a standard of volume. Each of these standards can be used to compare with other measurements made using the same units.