Total facility power ÷ IT load — with a plain-language efficiency band.
Last Updated: 15 Apr 2026
PUE = total facility power ÷ IT equipment power. Use the same units (e.g. kW) for both.
PUE: 1.75
Common for many colocation and enterprise facilities; room to optimize.
Non-IT overhead: 375.0 kW (42.9% of total)
PUE Calculator (Data Center Efficiency) helps you total facility power ÷ it load — with a plain-language efficiency band. It is commonly used by network admins, IT support teams, ops engineers for pue calculator, power usage effectiveness, data center efficiency.
Power Usage Effectiveness (PUE)
PUE compares total facility power to IT equipment power:
PUE = Total facility power ÷ IT load
Lower is better: a PUE of 1.0 would mean no cooling, lighting, or losses (theoretical). Real facilities add overhead for cooling, UPS, lighting, and distribution.
What You Get
- Numeric PUE
- A qualitative rating (exceptional through needs improvement)
- Non-IT overhead in kW and as a share of total power