PUE Calculator

Calculation of Power Usage Effectiveness, a predominate data centre measurement metric for establishing data centre energy efficiency is simple.

To calculate PUE requires two main measurements; Total Facility Power and IT Equipment Power.

The Total Facility Power reading is taken from the meter that feeds the data centre, or IT room with power and includes the power consumed by all of the equipment included under the definition all IT Equipment Power, such as, servers, storage, switches, workstations, printers and all of the power used in the power delivery, cooling, air conditioning, UPS. Lighting and other ancillary power consumed in the data centre is also included.

The IT Equipment Power is taken from a sub-meter that measure the power that is only delivered to IT equipment and includes all IT equipment used in the delivery of an application, such as, servers, storage, switches, workstations, printers and any other service delivery equipment.

Use this simple PUE calculator to calculate your PUE and see how changes in the values affect it. Enter your data below:

For an understanding of what a PUE means, see PUE and other pages on this site.

DCiE is a closely related metric to PUE and they can be considered as the inverse of each other. Use the DCiE Calculator to work your own DCiE calculation. Link to DCiE Calculation to see how DCiE is calculated.