Electricity cost calculator
Work out how much an appliance costs to run per hour, day, month and year from its wattage, how long you use it and your electricity price.
Your estimate
Cost per year
$133
- Cost per month
- $11
- Cost per day of use
- $0.36
- Cost per hour
- $0.18
- Energy per year
- 730 kWh
- Energy per day of use
- 2 kWh
Estimates for planning only — not a quote, survey or financial advice.
Sources for the pre-filled values — United States
- U.S. EIA — Electric Power Monthly, Table 5.6.B, average residential price (U.S. total) · Year to date through August 2026 (preliminary) · accessed 2026-11-06
How this is calculated
Formula
- kW = watts × number of appliances ÷ 1,000
- kWh per day = kW × hours per day
- kWh per year = kWh per day × days per week ÷ 7 × 365
- Cost = kWh × price per kWh
Assumptions
- The wattage on the label is the maximum. Appliances that cycle on and off (fridges, freezers, heaters with a thermostat) use less on average — if the energy label gives kWh per year, use that instead.
- The pre-filled price is a national average unit rate (see sources). Your tariff may differ; fixed daily standing charges are not included.
- Standby consumption is not included.