Electricity Cost Calculator
Fill in the values and the answer updates as you type.
How the Electricity Cost Calculator works
kWh = watts × hours ÷ 1,000. Cost = kWh × price per kWh.
Inputs and results
The Electricity Cost Calculator takes 3 inputs and gives 3 results.
What you enter
- Device power (W) — starts at 1500.
- Hours per day (h) — starts at 4.
- Price per kWh ($) — starts at 0.15.
What you get
- Cost per month
- Energy per day (kWh)
- Cost per year
Example: Electricity Cost Calculator with the starting values
With device power 1500 W, hours per day 4 h and price per kwh 0.15 $, the calculator returns:
| Cost per month | $27 |
|---|---|
| Energy per day (kWh) | 6 |
| Cost per year | $328.5 |
Change any value above and the results update straight away.
Electricity Cost Calculator FAQ
How do I use the Electricity Cost Calculator?
Enter device power, hours per day and price per kwh in the fields, then read cost per month, energy per day (kwh) and cost per year in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Electricity Cost Calculator calculate?
What a device costs to run. It returns cost per month, energy per day (kwh) and cost per year from the 3 values you provide.
What values does the Electricity Cost Calculator start with?
It opens with device power 1500 W, hours per day 4 h and price per kwh 0.15 $ so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Electricity Cost Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Electricity Cost Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.