Electricity Cost
See what an appliance costs to run per day, month and year from its wattage, daily hours and your electricity rate. It converts watts to kilowatts, multiplies by hours and price, then scales to a 30-day month and 365-day year. Handy for space heaters, PCs and old fridges.
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Worked example
Per day: $0.61 · Per month: $18.36 · Per year: $223.38
Inputs
- Watts
1200 - Hours/day
3 - $/kWh
0.17
Frequently asked
Where do I find the wattage?
Check the appliance label or spec sheet; a space heater is often 1,500 W, a laptop under 100 W.
What rate should I use?
Use the per-kWh price on your electricity bill; the US average is roughly $0.17.