Any Appliance
Watts × time × local electricity price.
Calculate →Updated August 15, 2026 · WattCostLab Editorial Team
Turn watts, operating time or annual kWh into a dollar estimate. Use your actual utility rate and, whenever possible, measured energy use or the appliance's EnergyGuide information.
Each tool explains the formula and the input that produces the most realistic estimate.
Watts × time × local electricity price.
Calculate →Estimate AC electricity cost with average power and runtime.
Calculate →Estimate cost per load, month and year.
Calculate →Estimate electricity cost per cycle and per month.
Calculate →Estimate cooking electricity cost from average power and time.
Calculate →Use annual kWh or measured energy for cycling equipment.
Calculate →Estimate daily and seasonal pump energy cost.
Calculate →Use annual kWh for a better refrigerator estimate.
Calculate →Cost = (watts ÷ 1,000) × hours × $/kWh
For equipment that cycles, replace maximum wattage with measured average energy use when available.
State averages are useful references, but your utility tariff can be different. Use Electricity Cost by State as a benchmark, then replace it with the rate on your bill.
We avoid pretending that one wattage represents every appliance. Default values are illustrative starting points. Product size, efficiency, thermostat cycling, motor speed, standby operation and user behavior can materially change actual kWh.
Source check: September 13, 2026. ENERGY STAR's current refrigerator listings report annual kWh by model, allowing operating-cost comparisons using real label data rather than only rated watts. ENERGY STAR notes that an old refrigerator uses about 35% more energy on average than an ENERGY STAR model.
ENERGY STAR refrigerator database → · EIA electricity-price data →
Use the Refrigerator Electricity Cost Calculator to compare annual and 10-year operating costs.
Start with the pages readers are using most often for cost planning and comparisons.