Estimate appliance energy use and cost from watts and running time.
Reviewed: 2026-07-21
Calculate kilowatt-hours and estimated cost from appliance wattage, daily use, days, quantity, and an editable price per kWh. It does not reproduce KEPCO tiered billing, adjustments, discounts, taxes, or the final household bill.
Check input units and reference dates first. For an important decision, compare the result with an official source or original document. A rounded display can differ slightly from the underlying value.
Multiply watts by running hours and quantity, then divide by 1,000.
Household bills can include tiers, seasonal rules, adjustments, VAT, funds, and discounts.
Not always. Inverter and thermostat-controlled devices vary their draw, so the result is an estimate.