When converted, 120 to 130 kilometers per hour is approximately 74 to 80 miles per hour. Conversion can be done by multiplying the number of kilometers by 0.62137 or by dividing the number of miles by 0.62137.
The metric system is a decimal system of measurement that was first adopted by France in 1799. Every country on earth has officially adopted the metric system, except for the United States, Burma and Liberia. Its main feature is a standard set of interrelated base units distinguished by prefixes in powers of ten. It was originally invented for commercial use but has since become the standard for science and engineering.