Electricity Cost Calculator for Appliances
Below, we have created a simple electricity cost calculator to help you understand how much electricity an appliance costs you to run per day, month and year.
All you need to do is enter your appliance's wattage, how long it runs for on average in a day and your electricity unit rate.
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Calculate by wattage
The starting unit rateis Ofgem’s price-cap rate for GB average, Direct Debit, 1 July 2026 to 30 September 2026 (Ofgem). Your own tariff rate will always beat an average.
£476.51 per year
Based on £1.31 per day of running cost.
Calculate by appliance
£4,288.57 per year
Based on £11.75 per day of running cost.
Don't know the wattage of your appliance?
No problem! We also have a simplified version above, where you can just select an appliance name along with how long it runs for and your electricity rate.
We will use the average wattage to calculate how much it costs to run (the same average as in the table below).
Typical electricity usage for popular household appliances
In the table below, we have listed some of the typical wattage for different types of appliances you will likely find around your home.
This will give you a good idea of what your appliance is costing you, but for better accuracy, you should find out the actual wattage of your appliance either online or on the appliance itself.
| Appliance | Wattage |
|---|---|
| Electric Shower | 9,000W |
| Immersion Heater | 3,000W |
| Kettle | 3,000W |
| Tumble Dryer | 2,500W |
| Electric Heater | 2,500W |
| Oven | 2,100W |
| Washing Machine | 2,100W |
| Hairdryer | 2,000W |
| Hob | 2,000W |
| Grill | 1,500W |
| Iron | 1,500W |
| Toaster | 1,000W |
| Microwave | 1,000W |
| Lawn Mower | 1,000W |
| Vacuum | 900W |
| Towel Rail | 450W |
| Electric Blanket | 150W |
| PC | 140W |
| Television | 120W |
| Games Console | 120W |
| Laptop | 50W |
| Router | 10W |
Frequently asked questions
How do I find the wattage of my appliance?
You can usually find the wattage on a label on the appliance itself, in the user manual, or by searching for the make and model online. If you cannot find the exact wattage, you can select an appliance from our dropdown list which uses the average wattage for that type of appliance.
How much does it cost to run a washing machine?
A typical washing machine uses around 2,100 watts. Running it for one hour at the average UK electricity rate would cost approximately 60p. Actual costs depend on the cycle length, temperature setting and your electricity tariff.
Which household appliances use the most electricity?
Electric showers (9,000W), immersion heaters (3,000W) and kettles (3,000W) have the highest wattage. However, appliances that run for long periods like fridges, freezers and electric heaters often cost more overall despite lower wattage.
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Written by
Rob Gibbs
Hi, I'm Rob, and I run Energy-Review.co.uk. I initially started this project in 2018 when I was looking to switch energy suppliers and found there wasn't a website that provided simple, data-backed reviews on all the suppliers available. Since then, I have spent a lot of time (too much, some may say!) looking at all publicly available data about each supplier and writing reviews using this information. These reviews are updated as regularly as possible, and any data is backed up by a source where necessary. I have also started writing guides on various energy-related topics, which hopefully you will find useful. If you find any issues, please use our contact form to let us know.