**Question:**What Units Is the Metric System Based On?

**Answer:**The metric system is a decimal-based system of measurement originally based on the meter and kilogram, which were introduced by France in 1799. Decimal-based means all the units are based on powers of 10. In order to convert between units, it's only necessary to multiply or divide by powers of 10. For example, 1 meter is 100 centimeters (multiply by 10

^{2}or 100). 1000 milliliters is 1 liter (divide by 10

^{3}or 1000).

### More About the Metric System

Overview of Metric UnitsTable of Derived Metric Units

Metric Unit Prefixes