Electricity Cost Calculator
Calculate how much an appliance adds to your electric bill from its power rating, daily usage hours, number of days and price per kWh.
- Energy consumed
- 180.00 kWh
Formula: Cost = (W / 1000) × hours × days × rate
About Electricity Cost Calculator
Electricity Cost Calculator is a free online calculator that gives you an instant, accurate result as you type. Calculate how much an appliance adds to your electric bill from its power rating, daily usage hours, number of days and price per kWh.
The calculation uses the standard formula Cost = (W / 1000) × hours × days × rate and updates live with every change to the inputs. Everything runs client-side in your browser — fast, private, and free to use as often as you like.
Enter the rate in your own currency per kWh; the result is in the same currency, so the tool works for any country and tariff.
Frequently Asked Questions
Is Electricity Cost Calculator free to use?
Yes. Electricity Cost Calculator is completely free, with no sign-up, no downloads, and no usage limits. You can use it as many times as you like on any device with a web browser.
How accurate is this calculator?
The calculator applies the standard formula (Cost = (W / 1000) × hours × days × rate) with full floating-point precision and rounds only the displayed result. For most practical purposes the results are exact.
Related Tools
Rhombus Calculator
Calculate the area, side length, and perimeter of a rhombus from its two diagonals.
Kite Calculator
Calculate the area of a kite from its two diagonals, plus its perimeter from the two pairs of sides.
Octagon Calculator
Calculate the area and perimeter of a regular octagon from its side length.
Heptagon Calculator
Calculate the area and perimeter of a regular heptagon (7-sided polygon) from its side length.
Nonagon Calculator
Calculate the area and perimeter of a regular nonagon (9-sided polygon) from its side length.
Decagon Calculator
Calculate the area and perimeter of a regular decagon (10-sided polygon) from its side length.