Appliance Energy Cost Calculator
Work out how much an appliance really costs to run. Start with a preset, adjust the wattage and usage pattern, then compare the daily, monthly, and yearly electricity bill impact.
Appliance setup
Presets are starting points. Real usage depends on the exact model, thermostat settings, duty cycle, and how often you use it.
Typical residential electricity rate in USD per kWh.
- Appliance
- Space heater
- Connected load
- 1.5 kW
- Usage pattern
- 4 hours per day, every day
- Rule of thumb
- Noticeable running cost
Running cost estimate
Energy breakdown
- Daily energy use
- 6 kWh
- Weekly energy use
- 42 kWh
- Monthly energy use
- 182.63 kWh
- Yearly energy use
- 2,190 kWh
- Average hours per day
- 4 h
What changes the bill most
- High wattage matters. Space heaters, tumble dryers, ovens, and portable AC units move the result much faster than TVs or laptops.
- Hours used matters just as much. A small appliance used all day can beat a powerful one used for 10 minutes.
- Quantity multiplies cost. Six bulbs, two heaters, or several monitors can turn a small per-hour figure into a noticeable monthly total.
- Tariff price matters. If your provider rate changes, update the price per kWh first before comparing appliances.
About Appliance Energy Cost Calculator
The Appliance Energy Cost Calculator estimates what a household appliance costs to run from four things: how many you have, how much power each one draws, how long you use it, and your electricity tariff.
It is designed for normal buying and usage decisions, not raw engineering conversions. That means you can compare a heater against a TV, a dishwasher against an air fryer, or a row of bulbs against a laptop charger using the same plain-language inputs.
How to Use Appliance Energy Cost Calculator
- 1 Pick a preset or type your own appliance. Presets are only a starting point, so edit the name or wattage if your model differs.
- 2 Set quantity and power. If you are running several bulbs, heaters, or monitors, enter the total number in Quantity.
- 3 Enter a realistic schedule. Hours per day and days per week usually matter more than tiny wattage differences.
- 4 Update the tariff. Use your latest bill or supplier app and type the actual price per kWh for the most useful estimate.
- 5 Read the green estimate panel. It gives you the hourly, daily, monthly, and yearly running cost straight away.
Frequently Asked Questions
Where do I find the wattage? ▾
Check the product label, charger brick, manual, retailer listing, or energy sticker. If a device lists amps and volts instead of watts, multiply them to estimate watts.
Why do fridges and air conditioners need a rough estimate? ▾
Some appliances cycle on and off. Their labelled wattage is not the same as running flat-out 24 hours a day, so use a realistic average runtime instead of assuming constant operation.
Is monthly cost based on 30 days? ▾
This calculator uses the average month length of 30.4375 days so the monthly and yearly numbers stay aligned.
Should I compare appliances by hourly or yearly cost? ▾
Use hourly cost when comparing devices with similar schedules. Use monthly or yearly cost when trying to understand the actual bill impact in your home.