Where can I find appliance wattage?
Check its label, manual, smart plug, or power meter; rated wattage may exceed typical use.
Electricity Cost Calculator
Estimate energy use and electricity cost from power, runtime, and price.
Calculations happen locally. We do not send your values to our server.
Example
A 1,000-watt appliance used 2 hours daily for 30 days consumes 60 kWh; at 0.20 per kWh it costs 12.
Calculation method
Energy equals watts divided by 1,000, multiplied by daily hours and number of days. Cost multiplies kilowatt-hours by the entered unit price.
Important notes
Actual consumption can vary with duty cycles, standby power, efficiency, tariffs, taxes, demand charges, and changing energy prices.
Frequently asked questions
Can I enter my local currency?
Yes. Enter the price per kWh in any currency and the cost result uses that same currency.
Does this support tiered electricity prices?
No. Use an average price per kWh or calculate each tariff tier separately.