Enter your details
Calculation method
Energy (kWh) = number of items × watts × hours/day × days/year ÷ 1000.
Your result
How to use this calculator
What to enter
Enter or select the following as requested: Number of appliances / loads; Average power per item; Hours per day; Days used per year. Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The environmental result estimates resource use, emissions, efficiency, or savings from the activity, energy mix, quantities, and factors entered. Check the unit basis, geographic emissions factors, system boundary, time period, and whether upstream production or disposal impacts are included.
When to use it
Use this to compare sustainability scenarios or identify potential savings. Treat the result as an estimate that depends on the assumptions and data source; use locally relevant factors for reporting or compliance.