## Measurement unit: microsecond

Full name: microsecond

Plural form: microseconds

Symbol: us

Alternate spelling: microsec

Category type: time

Scale factor: 1.0E-6

## SI unit: second

The SI base unit for time is the second.
1 second is equal to 1000000 microsecond.

## Convert microsecond to another unit

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## Definition: Microsecond

The SI prefix "micro" represents a factor of 10-6, or in exponential notation, 1E-6.

So 1 microsecond = 10-6 arcseconds.

The definition of a second is as follows:

A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 (approximately 7.7×10-7) of a circle. It is the angular diameter of an object of 1 unit diameter at a distance of 360×60×60/(2pi) (approximately 206,265 units), such as (approximately) 1 cm at 2.1 km, or, directly from the definition, 1 astronomical unit at 1 parsec.