Electricity Bill Calculator
Estimate appliance energy use and electricity cost per day, month, year.
- 100% free
- Private in browser
- No signup
- No watermarks
Energy used
Per day
0.8 kWh
Per month
24 kWh
Per year
292 kWh
Estimated cost
Per day
6.40
Per month
192.00
Per year
2,336.00
Cost is currency-neutral — enter your local rate per unit (kWh). Month = 30 days, year = 365 days.
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About Electricity Bill Calculator
Electricity Bill Calculator on TheToolss estimates how much energy an appliance uses and what it costs to run. Enter the wattage, hours of use per day, how many units you own, and your electricity rate per kWh, and it shows the energy in kilowatt-hours and the cost per day, month, and year. It is perfect for working out the running cost of an AC, geyser, fridge, or any device before you buy or budget. Currency-neutral and fully in-browser.
How to use Electricity Bill Calculator
- Enter the appliance power in watts.
- Enter hours of use per day and how many units you have.
- Enter your electricity rate per unit (kWh).
- Read the energy use and estimated cost per day, month, and year.
Key features
- Energy use in kWh per day, month, and year
- Cost estimate at your own unit rate
- Handles multiple identical appliances
- Currency-neutral — works anywhere
- Private browser tool — no signup
Frequently asked questions
- Is the Electricity Bill Calculator free?
- Yes. Estimate as many appliances as you like, free on TheToolss.
- How is energy calculated?
- Energy (kWh) = watts × hours × quantity ÷ 1000. Cost = energy × your rate per unit.
- What is a "unit" of electricity?
- One unit is one kilowatt-hour (kWh) — a 1000W appliance running for one hour.
- Which currency does it use?
- It is currency-neutral. Enter your local rate per kWh and the cost is in that currency.
- Is my data private?
- Yes. All calculations run in your browser and nothing is uploaded.
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