Start here
Use the Appliance Running Cost Calculator
Running cost comes from power use, time used and electricity price. Always-on devices can matter because the hours stack up.
How much does this appliance cost to run?
Estimate appliance running cost from watts, hours and electricity price, with daily and yearly context.
Assumptions to check
- Watts are accurate for the appliance mode used.
- Electricity price is entered per kWh.
- Standby use may be different from active use.
Quick checklist
- Find the wattage label or estimate.
- Enter hours used per day.
- Use your electricity price per kWh.
- Compare daily, monthly and yearly cost.
- Check always-on appliances separately.
Common mistakes
- Ignoring time used.
- Using watts as if they were kWh.
- Forgetting devices that run every day.
Why appliance cost is a time problem
A powerful appliance used briefly may cost less than a smaller device running all day. That is why watts and hours must be calculated together.
How to use the estimate
Use the result to decide whether a habit is worth changing. A tiny daily cost can still be meaningful over a year if the device runs often.
What to calculate next
Use the electricity cost calculator for simple one-device checks and the home energy audit checklist for a wider review.