Converting between different metric prefixes is a matter of determining how far to move the decimal left or right depending on how far between the two prefixes the units in question are. Converting between the different customary units is a matter of knowing how many of each unit equals another. These equivalent measures can be used to convert between one unit (i.e. gallons) into another (i.e. cups).
Time
Length
Weight
Capacity
Remember, seconds is both a unit in the customary system and the metric system. Review the charts to see the equivalent measures within each system.
Inches, feet, and miles are all customary units of measurement. The base unit for length in the metric system is the meter. Review the charts to see equivalent units of measure within each system.
The pound and the ton are the customary units of weight. The metric system, however, references mass rather than weight. Weight and mass are related because weight is the measure of gravity on a specific mass.
Cups, pints, quarts, and gallons are all units in the customary system. The base unit for the metric system is the liter. Review these charts to see equivalent measures.
