Electricity Cost Calculator
Find what an appliance costs to run per day, month and year from its watts, hours used and your price per unit (kWh). Free tool.
On the device's label, e.g. AC 1500 W, fan 70 W, fridge 150 W.
Per month (30 days)$40.50
Per day$1.35
Per year$492.75
Energy per day9 kWh
Energy per month270 kWh
Formula
kWh = watts × hours ÷ 1000Cost = kWh × price per kWhAd space · responsive
How to use Electricity Cost Calculator
- Enter the device's power in watts (on its label).
- Enter hours used per day and your price per kWh (unit) from your bill.
- See the cost per day, month and year.
Privacy
Runs entirely in your browser. Nothing you enter or open here is uploaded.
Questions
Why is my real bill different?
Devices with thermostats (AC, fridge) don't draw full power all the time, and bills may add fixed charges, tiers and VAT.