Electricity Cost Calculator
Estimate what an appliance costs to run. Enter its power, the hours used each day and your price per kWh to see daily, monthly and yearly cost.
8 of 8 free uses remaining today
Estimate what an appliance costs to run. Enter its power, the hours used each day and your price per kWh to see daily, monthly and yearly cost.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
With the default inputs (appliance power = 1,500 W, hours per day = 4, price per kWh = 0.3), the results are: energy per day 6.00 kWh; cost per day 1.80; cost per year 657.00.
Quick reference: appliance power vs result
Reference table based on the example values; it is not your calculation result.
| Appliance power (W) | Energy per day | Cost per day | Cost per year |
|---|---|---|---|
| 750 | 3.00 kWh | 0.90 | 328.50 |
| 1,500 | 6.00 kWh | 1.80 | 657.00 |
| 3,000 | 12.00 kWh | 3.60 | 1,314.00 |
| 7,500 | 30.00 kWh | 9.00 | 3,285.00 |
| 15,000 | 60.00 kWh | 18.00 | 6,570.00 |
| 30,000 | 120.00 kWh | 36.00 | 13,140.00 |
Frequently asked questions
What formula does this calculator use?
Energy per day = w × h ÷ 1000; Cost per day = w × h ÷ 1000 × p; Cost per year = w × h ÷ 1000 × p × 365. Variables: w = appliance power in W, h = hours per day, p = price per kwh.
What do I need to enter?
You need appliance power (W), hours per day, price per kwh. Results update as you type.
What is an example result?
With the default inputs (appliance power = 1,500 W, hours per day = 4, price per kWh = 0.3), the results are: energy per day 6.00 kWh; cost per day 1.80; cost per year 657.00.
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