Appliance Electricity Cost Calculator
Calculate monthly electricity usage and cost for multiple appliances from wattage and hours/day.
Last reviewed by the Radiatus Cloud team
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Work out what your appliances cost
Your electricity bill is the sum of every appliance’s usage, and breaking it down reveals where the cost goes. This calculator computes the monthly electricity usage and cost for multiple appliances.
Why itemising appliances helps
A total electricity bill hides which appliances drive it, and the answer often surprises: a few high-power or always-on devices can dominate. Calculating each appliance’s cost, its power times hours times the price, and summing them, shows where the money goes, which is the basis for reducing the bill deliberately rather than guessing. Seeing that one appliance costs far more than expected is often what prompts a change, so itemising is the practical first step to cutting electricity costs.
A planning estimate
These are estimates from a standard method for general planning, not professional advice; confirm anything important for your specific situation. It runs entirely in your browser, so nothing you enter is uploaded and it works without an account, keeping your data on your own machine.
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Frequently Asked Questions
How is each appliance’s cost found?
As its power (wattage) times the hours it runs, giving energy, times the electricity price, for each appliance, then summed for the total.
Why itemise instead of using the total bill?
Because the total hides which appliances drive it. Itemising reveals where the cost goes, which is the basis for reducing it deliberately.
Which appliances usually cost the most?
High-power ones like heating, cooling and water heating, and always-on devices, which can dominate the bill more than people expect.
How does this help cut costs?
By showing the biggest contributors, so you can target them, run them less, replace them with efficient models, or change how they are used.
Is my data uploaded?
No. The calculation runs entirely in your browser.
Privacy & Security
Calculated locally in your browser. No data is sent to any server.
How to Use
Paste appliance list (name,watt,hours/day) to calculate monthly cost.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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