Topic summary

Microsecond

A microsecond is a unit of time in the International System of Units (SI) equal to one millionth (0.000001 or 10 or 1⁄1,000,000) of a second. Its symbol is μs, sometimes rendered as us when Unicode is not available.

A microsecond is to one second, as one second is to approximately 11.57 days.

A microsecond is equal to 1000 nanoseconds or 1⁄1,000 of a millisecond. Because the next higher SI prefix is 1000 times larger, measurements of 10 and 10 seconds are typically expressed as tens or hundreds of microseconds.