Skip to main content
Tools / Energy / Energy Cost Calculator

On this page:

  1. Energy Cost Calculator
  2. How is energy cost calculated?

This calculator allows you to calculate the daily, monthly, and yearly costs of your electrical equipment and devices.

Add multiple appliances and devices and see the total costs below.

p
Watts

kWh

Hours

kWh
Cost per 10 mins:-
Cost per day:-
Cost per month:-
Cost per year:-
Total cost per day:
£0.00
Total cost per month:
£0.00
Total cost per year:
£0.00

How is energy cost calculated?

To calculate how much a device or appliance costs to run, simply multiply the amount of energy used (kWh) by the unit cost of one kWh.

For example

If an oven uses 2100 watts per hour (2.1 kWh per hour), and you use the oven for 2 hours, then you will have used 4.2kW. If the unit cost of 1 kWh is 31p for example, you just need to multiply 34p by 4.2.

34p x 4.2 = £1.43
Have you tried our Energy Price Cap Simulator?

Simulate different energy price cap scenarios to compare if you're should stay on a fixed rate tariff or variable tariff.

Try Energy Price Cap Simulator