Enter Power Supply Specification:

Output Voltage (V)
Output Current (A)
Input Voltage (VAC)

External Power Supply Efficiency Compliance Calculator by...

Nameplate Power (W):  

Enter the specifications, no-load input power, and measured active mode efficiency data for your power supply to see if it complies with current worldwide energy efficiency regulations.

115(VAC) 230(VAC)
No Load Input (W):

Enter efficiency Levels at 115 or 230 (VAC)

Enter Input Efficiency:
115(VAC) 230(VAC)
at 25%*:
at 50%*:
at 75%*:
at 100%*:
Single Input Avg. Average Efficiency

*Enter percentage as a decimal.

  No Load Active Mode
  Req Actual Req Actual
U.S. DOE EISA 2007 (Level VI)**
EC Code of Conduct (v5) Tier 1***
EC Ecodesign (ErP Tier 2) Level V
China USB Charger Spec (YD/T 1591-2009)
EC Integrated Product Policy (IPP)
No Stars
One Star (0.35 - 0.5 W)
Two Stars (0.25 - 0.35 W)
Three Stars (0.15 - 0.25 W)
Four Stars (0.03 - 0.15 W)
Five Stars (Under 0.03 W)
**DOE Level VI compliance is only required at 115 V.
***EC Code of Conduct compliance is only required at 230 V. For mobile phone chargers <8 W, no-load power ≤ 0.075 W. Min. efficiency of 10% load is required. See spec for more details.