Appliance Energy Cost Calculator

Estimate an appliance’s energy use and cost from watts, daily operating hours, days and quantity. Compare usage choices using your own electricity rate.

Energy (kWh) = watts / 1,000 × daily hours × days × appliance count. Cost = kWh × price per kWh. For cycling appliances such as refrigerators, use measured average power or energy use.

Example: one 1,000 W appliance running four hours daily for 30 days uses 120 kWh. At THB 4.50/kWh it costs THB 540, or THB 18 per day.

This estimates appliance cost, not the whole utility bill. Tiered tariffs, Ft adjustments and standing charges are not applied automatically. The starting rate is illustrative; use the electricity-bill calculator for a household bill.