Calculator · Heating & cooling
Appliance running costs
Work out a usage cost from power, hours and your electricity rate.
Keep a copy of your results.
We’ll email you what you entered and what it came to. We won’t use your address for anything else unless you ask us to.
How this tool works
Daily energy is average electrical power in kW multiplied by hours. Multiply by the electricity rate, then by the number of days. Use electrical input, not a heater’s rated heat output. Cycling and inverter appliances may draw less than the maximum rating. Supply charges are excluded.
Sources
3 kW of electrical power, running for 2 hours, uses 6 kWh of energy — the total you pay for.
Power is the pace. Energy is the total.
Electrical power
3 kW
A constant input
Run time
2 hours
How long it runs
Energy used
6 kWh
The total to pay for
Use electrical input, not a heater’s heat-output rating.
