Inch per second

The inch per second is a unit of speed or velocity. It expresses the distance in inches (in) traveled or displaced, divided by time in seconds (s, or sec). The equivalent SI unit is the metre per second.

Abbreviations include in/s,[1] in/sec, ips,[1] and less frequently in s−1.


1inch per second is equivalent to:

=0.0254metres per second (exactly)
=112 or 0.083feet per second (exactly)
=588 or 0.05681miles per hour (exactly)
=0.09144km·h−1 (exactly)

1metre per second ≈ 39.370079inches per second (approximately)
1foot per second = 12inches per second (exactly)
1mile per hour = 17.6inches per second (exactly)
1kilometre per hour ≈ 10.936133inches per second (approximately)


In magnetic tape sound recording, magnetic tape speed is often quoted in inches per second (abbreviated "ips").

Also computer mice sensitivity is also often referred to in inches per second (abbreviated as "ips") along with g force.

In rotorcraft health monitoring, rotor and shaft induced vibration levels are often quoted in inches per second.

See also


  1. 1 2 "Velocity Units: Inch Per Second". efunda. Retrieved 2011-12-27.
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