Energy Cost Calculator
Estimate daily, monthly, and yearly electricity cost from wattage, hours of use, and your rate.
Open the calculatorCalculators
Smart Home Tools
Simple calculators for understanding what your devices cost to run and where automation may actually save money.
Results are estimates. Actual energy cost depends on how a device behaves and on the rate printed on your electricity bill.
Smart Plug Savings
Compare current hours against a schedule and see whether the difference is large enough to matter.
Open the calculatorWhat these tools are for
A wattage label and a bill rate already contain most of the story. These calculators turn those two numbers into a cost you can compare with the price of a plug, a bulb, or leaving a device alone.
They do not read your meter. They do not promise a rebate. They apply a standard kilowatt-hour formula and scale part-week use across a 365-day year.
For setup and device context, start with the Smart Home overview or the Smart Plugs hub.