Enter the total number of rack units into the calculator to determine the rack unit height.

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## Rack Unit Height Formula

The following formula is used to calculate the correct rack unit height.

h = (1.75*n - .0031)

- Where h is the rack unit height (inches)
- n is the total number of rack units

To calculate the rack unit height, multiply the number of rack units by 1.75, then subtract .0031.

## What is a rack unit?

Definition:

A rack unit is defined as a unit of measure equal to 1.75 or 1 – 3/4 inches. It’s commonly used in the use of rack frames, and their overall height.

## How to caclulate rack unit height?

Example Problem:

The following example outlines how to calculate a rack unit height.

First, determine the total number of rack units. In this case, the rack unit is a 3U rack, so the number of units is 3.

Next, the last and final step is to calculate the rack height using the formula above:

h = (1.75*n – .0031)

h = (1.75*3 – .0031)

h = 5.2469 inches