RU Calc is a simple tool to convert rackunits in inches or centimeters and vice versa.

Recalculation is done on the fly if you switch from inch to cm or in the other direction.

A cool app if you have to calculate the room needed for specific equipment or if you have a cabinet of a specific size and want to know how much rackunits it is.

RU Calc requires version 4 of the iPhone OS because the app uses iAd´s. You might see some advertisement on the bottom of the screen sometimes.