Appliance
Appliance running cost
Enter wattage, hours per day, number of units, and electricity rate to estimate monthly and yearly cost.
Monthly cost$8.1045 kWh used
Yearly cost$97.20same usage each month
Cost per hour$0.14all units running
Appliance running cost calculator
See what a device costs to run every month.
ApplianceCost converts wattage and daily use into a monthly estimate so you can check heaters, dryers, dehumidifiers, grow lights, freezers, or always-on devices.
Monthly appliance cost$8.10
editablewatts
Appliance calculator
Convert watts and usage time into monthly electricity cost.
Assumptions
Use the label wattage, then test the usage pattern.
Find the watts
Use the appliance label, smart plug reading, or manufacturer specification instead of guessing from similar devices.
Separate standby use
Always-on electronics and high-power devices need different assumptions. Estimate active hours and standby hours separately when needed.
Compare before replacing
A new appliance only saves money if the operating-cost difference is large enough to matter against the purchase price.
Appliance checks
Use it before buying, replacing, or leaving something on.
- 01Is an always-on device expensive?
Estimate the monthly cost of freezers, pumps, network gear, aquariums, or dehumidifiers.
- 02Will a timer help?
Reduce daily hours and see whether a timer or schedule changes the monthly total enough to matter.
- 03Is replacement worth it?
Compare the yearly running cost with a newer model before assuming efficiency pays for the upgrade.
Calculator guide
Use this appliance electricity cost calculator before a small device becomes a big bill.
ApplianceCost estimates the monthly and yearly electricity cost of a device from its wattage, daily runtime, number of units, and your electricity rate. It is useful for freezers, dehumidifiers, heaters, pumps, aquariums, network gear, and other devices that quietly run for hours.
The result is a practical first-pass estimate, not a utility bill forecast. Use the calculator to compare active hours, test a timer schedule, or check whether a more efficient appliance could pay back through lower running costs.
appliance electricity cost calculatorwattage to monthly costcost to run a freezerappliance replacement check
FAQ
Common questions before using the estimate.
How do I calculate the cost to run an appliance?
Multiply watts by hours used, divide by 1,000 to get kWh, then multiply by your electricity rate. This calculator does that math and scales it to a monthly and yearly estimate.
Where do I find appliance wattage?
Check the label on the appliance, the manual, the manufacturer specification page, or a plug-in energy monitor. A measured value is usually better than a generic estimate.
Should I replace an appliance just because it costs money to run?
Not automatically. Compare the yearly running-cost difference with the purchase price of the replacement, and include how long you expect to keep using it.