What does it actually cost to run?
Free calculators that turn watts into dollars. Find out what your heater, AC, appliances and light bulbs really cost, and where you can save.
¢ / kWh
Set it once and every calculator on the site will use it. 19¢ is roughly the 2026 U.S. average.
Calculators
Space Heater Cost CalculatorWhat your space heater costs per hour, month and winter.Appliance Electricity Cost CalculatorCost to run any appliance, plus a running total for your home.Air Conditioner Cost CalculatorCost to run a window, portable or central AC this summer.LED Savings CalculatorHow much switching to LED bulbs saves, and when it pays off.
How to find your electricity rate
Your electric bill lists your price per kilowatt-hour (kWh). Many bills split it into a supply charge and a delivery charge. Add them together to get your true rate. If you can't find it, divide your total bill by the kWh you used that month for a good estimate.
Why these calculators?
Most people know their electric bill went up but not why. The answer is almost always the same: anything that heats or cools. These tools show you exactly how much each one costs so you can decide what's worth changing.