Page last updated on 24th April 2026
Introducing our energy cost calculator
Are you looking for an energy cost calculator to help you estimate the cost of running your appliances? This energy cost calculator uses kilowatt hour data from standard household appliances.
This can help you understand your energy use. With more understanding, you can learn how to reduce your energy use and save money.
How does the energy cost calculator work?
This electricity usage calculator runs on the latest energy price cap and average appliance power ratings. This data has been drawn from Citizens Advice and the Centre for Sustainable Energy. This data tells us the hourly standard power consumption of household appliances.
You can input your typical appliance usage into this tool using the arrow keys provided. With this data, this energy price calculator estimates how much your usage might be costing you according to the current price cap.
How to use the energy price calculator
The energy price calculator below lists some standard domestic appliances. Using the arrow keys on the calculator, adjust how often you use each appliance. For example, you can input how many times each day you boil the kettle, or how many hours you use your laptop for each day. If you do not own a listed appliance, leave it blank.
There may be some appliances that you use regularly which we haven’t listed in this tool. The nature of this tool means it can't be used to estimate exactly how much you should expect to pay for electricity. But this appliance electricity cost calculator can be used to help you get an estimate of what certain domestic appliances are costing you to run. Once you've input your usage, this estimate will be displayed in the top right-hand corner. Below this, you can see how this estimate compares against previous price caps.*
*The electricity used by domestic appliances can vary depending on make and model. We’ve used average power ratings sourced from Citizens Advice and the Centre for Sustainable Energy. We have also used the price cap figures for a standard variable rate, so this energy calculator doesn't account for any fixed tariffs or extra costs.
This calculator was updated to reflect the 01/04/2026 price cap.
How will the price cap increase affect my bills?
£37
Cost per month
Based on the current energy price cap
−£5
Compared to the previous price cap
(Jan-Mar 2026)
−£3
Compared to the price cap before the previous
(Oct-Dec 2025)
How could a smart meter save you time and money on your household energy bill?
If you want help with how to work out your energy bill, you might be interested in upgrading your energy meter to a smart meter. Smart meters take automatic meter readings which are sent directly to your energy supplier. These automatic readings allow your supplier to give you an accurate energy bill rather than an estimated one.
This means you won't have to take meter readings yourself anymore and will only be charged for the energy you actually use. This means that changing your energy habits could help you to save money each month on your bill.
When you get a smart meter, you should receive an in-home display (IHD) which shows your energy usage in pounds and kilowatt hours (kWh). You can also see in near real-time whether your energy usage is high, medium or low.
A smart meter can't track which appliances you’re using, but reading an IHD throughout the day can help you learn how much energy your appliances use. You could use your IHD as a tool to learn more about the electricity usage of household appliances, and which devices spike your energy use and cost. This can help you get to grips with your energy bills.
Learn about how you can save money with a smart meter.
If you are interested in upgrading your energy meter to a smart meter, please enter your energy supplier into the box below.
Hear what smart meter owners have to say…
"My smart meter is fantastic. I no longer need to spider dodge in the outside gas meter cupboard to take a meter reading!"
Liz
"Best thing I ever installed was my smart meter. At 71, I don’t have to climb a step ladder to read the meter and send readings."
Joy
"I've got smart meters at home and in businesses. No more estimated bills, just pay for what I use! It's a great system."
Billy
"I like that it sends meter readings to my supplier. I’m 63 - from the days before smart meters. If I can use one then others can."
Leslie
"I don't get estimated bills! My smart meter is spot on with what I pay."
Steve
"I simply can't see what's not to like about smart meters! They certainly help my family keep a check on our energy spend."
David
"My smart meter has helped me access cheaper energy rates; now I charge the car and run the washing machine for less."
Alan
You may also be interested in...
- How to use a smart meter to save money. Learn about how upgrading your energy meter to a smart meter can help you manage your energy bills.
- How to access supplier and government help with energy bills. Learn about government schemes and grants which might be able to help with your energy bills.
- Energy Saving Tips. Explore our hub page for energy saving tips which can help you to get on top of your energy bills.