Choose your tool

CALCULATORS TOOL

Electricity Cost Calculator

Estimate energy use and cost for a constant-power device.

◇ Browser only

Your text

Or load a UTF-8 text file

0 lines · 0 characters

ResultsReady when you are

Your results will appear here.

Copy or download your result below.

Your text stays on this device.

LESS BUSYWORK, MORE DONE

Three steps. That’s it.

A useful toolkit for text, data, images and calculations.

01
Add your input
Choose a tool, enter values or select a file.
02
Make it yours
Adjust the options and run the action.
03
Take the result
Copy the result or download its file.

Estimate energy use and cost for a constant-power device online

Estimate running cost for an appliance. The model assumes constant power and the entered tariff; standby behavior and tiered charges are excluded.

How to use it

Enter Power in watts or select Try example. Review Hours / day, Days, Price / kWh. Select Calculate and inspect the result before copying or downloading.

Options and example settings

Option	Choices / value	Example default
Hours / day	Enter a value	5
Days	Enter a value	30
Price / kWh	Enter a value	0.2

Calculation method

Estimated kWh = power in watts ÷ 1000 × hours of operation. Multiply kWh by the supplied per-kWh tariff.

Worked examples

Estimate running cost for an appliance.

Worked example — Electricity Cost Calculator

Settings: Hours / day: 5; Days: 30; Price / kWh: 0.2

Input:

Output:

Energy (kWh): 15
Cost: 3

The example output has 2 lines. Compare its order, separators and whitespace with the input before copying the result.

Limitations and common mistakes

The model assumes constant power and the entered tariff; standby behavior and tiered charges are excluded.

Frequently asked questions

How can I approximate energy use and cost for a constant-power device online?

Enter Power in watts or select Try example. Review Hours / day, Days, Price / kWh. Select Calculate and inspect the result before copying or downloading.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.