How it works
Uses the entered rated power and price per kWh as constants. Real-world consumption varies with standby use, duty cycles and variable tariffs.
FormulaCost = watts ÷ 1,000 × hours/day × days × price/kWh.
HOME & ENERGY / BILLS
← All toolsElectricity running cost
Estimate what an appliance costs to run for a chosen number of hours and days.
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YOUR RESULT
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Electricity running cost: a worked example
With power (watts) 1,500, hours per day 3, number of days 30, electricity price per kwh 0.27, the estimated running cost is $36.45.
| Power (watts) | 1,500 |
|---|---|
| Hours per day | 3 |
| Number of days | 30 |
| Electricity price per kWh | 0.27 |
| Estimated running cost | $36.45 |
|---|---|
| Electricity used | 135 kWh |
| Daily running cost | $1.22 |
| Power in kW | 1.5 kW |
Amounts are shown in US dollars for illustration. Choose your own currency in the calculator above; it labels amounts and does not convert them.
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Modelled results are estimates. Independently check decisions involving health, finances or safety.
Frequently asked questions
How is the electricity running cost calculated?
Cost = watts ÷ 1,000 × hours/day × days × price/kWh. Uses the entered rated power and price per kWh as constants. Real-world consumption varies with standby use, duty cycles and variable tariffs.
What does the electricity running cost example show?
With power (watts) 1,500, hours per day 3, number of days 30, electricity price per kwh 0.27, the estimated running cost is $36.45. Electricity used: 135 kWh; Daily running cost: $1.22; Power in kW: 1.5 kW.
What assumptions and limits apply?
This is an estimate based on the inputs and assumptions shown on this page, not professional advice. Check anything with financial, health or safety consequences independently.
Is my data private?
Yes. Calculations run in your browser and your numbers are not sent to a server. A share link contains the inputs you choose to share, so check it before sending it to anyone.
Can I use my own currency?
Yes. Pick from 33 currencies and the amounts are labelled to match. The selector does not convert between currencies, so enter prices in your own currency.