The microsecond conversion selector on this page selects the time measurement unit to convert to starting from microseconds (μs). To make a conversion starting from a unit of time other than microsecond, simply click on the "Reset" button.
The microsecond is a unit of time in the metric system equal to one millionth of a second (1 μs = 10-6 s).
One microsecond (μs) is also equal to 109 femtoseconds (fs), or 106 picoseconds (ps), or 1,000 nanoseconds (ns) or 0.001 milliseconds (ms), which are SI units of time.
Times of this magnitude (i.e., on the microsecond time scale) are used in electronics.