Online calculator
Electricity Cost Calculator
Calculate electricity consumption and electricity cost per day, month and year quickly online.
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What does this calculator do?
Use this electricity cost calculator to estimate how much electricity a device, usage pattern or typical power consumption costs per month and per year. It is useful for household appliances, electronics, space heaters, computers, home office setups, kitchen devices, lighting and many other scenarios.
Formula
Daily electricity consumption in kWh = (power in watts ÷ 1000) × usage hours per day Weekly electricity consumption = daily consumption × usage days per week Yearly electricity consumption = weekly consumption × 52 Monthly electricity consumption = yearly consumption ÷ 12 Variable electricity cost = electricity consumption × electricity price Total monthly cost = variable monthly electricity cost + monthly base fee Total yearly cost = variable yearly electricity cost + monthly base fee × 12
Example
Example: A device with 1,500 watts runs 2 hours per day on 7 days per week. This results in daily consumption of 3 kWh, weekly consumption of 21 kWh and annual consumption of about 1,092 kWh. At an electricity price of €0.32 per kWh, variable electricity cost is about €349.44 per year. With an additional monthly base fee of €12, total annual cost is about €493.44.
What does this electricity cost calculator calculate?
The calculator estimates electricity consumption in kWh per day, week, month and year for a device or usage scenario. It also calculates variable electricity cost and total cost including a monthly base fee. This helps you understand what appliances or usage habits really cost.
What can I use this calculator for?
You can use it for space heaters, TVs, refrigerators, washing machines, dryers, gaming PCs, laptops, air conditioners, kettles, stoves, lighting or chargers. It is also useful for estimating electricity cost in home office setups or for comparing specific household devices.
Why do watts, usage time and electricity price matter so much?
Power in watts shows how much energy a device may use per hour. Usage time turns that into actual electricity consumption. The electricity price then determines how expensive that consumption becomes in money terms. Especially for high-power devices, just a few more hours per week can noticeably change annual cost.
How accurate are the results?
The results are intended as a realistic estimate. In real life, many devices do not run at full rated power all the time. Actual bills also depend on tariff details, price changes, base fees, network charges and the precise billing period.
When is this calculator especially useful?
It is particularly helpful when you want to identify power-hungry devices, compare purchases, estimate operating cost or find savings potential. It can also support moving plans, household budgeting, utility planning or electricity tariff comparisons.
Why is this topic strong for SEO?
Electricity cost is a classic search topic with constant demand. Users search for electricity cost per device, calculate power consumption, monthly electricity cost and savings potential. That makes a high-quality calculator page with formula, example, FAQ and relevant internal links especially valuable.
Frequently asked questions
How do I calculate electricity cost in money terms?
Multiply electricity consumption in kWh by the electricity price per kWh. If there is a monthly base fee, include that as well.
How do I calculate the electricity use of a device?
Divide the power in watts by 1000 and multiply the result by usage time in hours. This gives you electricity consumption in kWh.
How much does a 1000 watt device cost per hour?
A 1000 watt device uses 1 kWh when running for one hour. The actual cost depends directly on the electricity price per kWh.
Why is my real electricity bill different from the calculator?
Real consumption may differ, tariffs may include additional details, prices can change and many devices do not run continuously at full power.
Can I use this calculator for household electricity estimates?
Yes, it works well for device-level and rough estimates. For the full household, a real yearly bill or meter reading is usually more accurate.
Are the results binding?
No. This calculator is for general information and initial guidance only. The actual meter readings and your tariff conditions are what ultimately matter.