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Your location gives the calculator sensible defaults. Only change an extra setting when it differs from your actual bill.

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What does this appliance cost to run?

Get a clear estimate in about a minute. We will guide you through the three numbers you need.

Start with an appliance
  1. 1
    Choose an applianceWe fill in a typical power value.
  2. 2
    Tell us how you use itAdjust the time or cycles if you know them.
  3. 3
    Add your electricity priceFind the per-kWh rate on your bill.
Your guided estimate

Calculate one appliance

Typical values are already filled in. Change only what you know—the result updates automatically.

1
Choose your applianceWe will start with typical values.
2
Tell us how you use itLeave the suggested values if you are unsure.

Pick the wording you see on your AC sticker. The marked examples show exactly which number belongs here.

3
Add your electricity priceLook for “per kWh” or “unit rate” on your bill.
Where do I find the right price on my bill? →

Result updates as you type

ACAir conditionerTypical estimate

Estimated Estimated running cost

$0.23 / hour

Based on 1,600 W at 72% typical load.

Per day
$1.859.2 kWh
Per month
$56.26281 kWh
Per year
$675.103,376 kWh
Need more accuracy? Open the advanced calculator
Make the estimate yours

Where do the numbers come from?

The calculator starts with typical values. Check these three things to make the result more useful for your own home.

Start with watts, not the star rating

Look for rated input power in W or kW on the appliance nameplate. A star rating compares efficiency with similar products; it is not the number to enter as watts. If your label only gives annual energy in kWh, use the annual-energy option in the air-conditioner calculator instead.

Use your actual time and electricity rate

A 75 W fan used for 8 hours consumes 0.6 kWh each day: 75 ÷ 1,000 × 8. Over 30 days that is 18 kWh. Multiply 18 by the price per kWh on your bill to estimate its energy charge. Fixed bill fees and taxes may still be extra.

Treat the result as a starting point

A thermostat-controlled appliance may draw less than its rated input for part of the day. Fridges cycle on and off, and an air conditioner's load changes with weather and settings. For a closer result, replace the suggested values with figures from your label, bill, or a plug-in energy meter.

See a marked appliance labelFind the right rate on your bill

After your first estimate

Keep going only if it helps.

Your result is useful on its own. These optional next steps help answer bigger household questions.

2

See your household total

Put saved appliances together to estimate your complete monthly cost.

View my household
3

Compare a change

Check whether using an appliance less or replacing it could save money.

Compare options
Common starting points

Pick a popular appliance.

See all appliances
ACAir conditioner0.8–2.4 kWh per operating hourRHRoom heater0.4–2.5 kWh per operating hourWMWashing machine0.35–1.5 kWh per cycleRFRefrigerator150–650 kWh per yearWHWater heater1.2–5.5 kWh per household dayCFCeiling fan25–90 watts while running
Your data stays with youNo account is required. Saved results stay on this device.
You can see the assumptionsEvery estimate shows the usage and rate behind the number.
How the calculation works →