A familiar situation
Berechnen Sie die laufenden Stromkosten eines Haushaltsgeräts oder einer Beleuchtung.
How to use this calculator
- Enter power, usage time, electricity price.
- Select Calculate to see the answer and its breakdown.
- Keep a scenario, change an input and compare the results.
Use consistent units and check the assumptions below before applying the result.
How electricity is calculated
Estimate electrical energy and cost from power, hours of use, and an adjustable price per kilowatt-hour. For variable loads, use average power over the measured interval; fixed charges, taxes, demand fees, and time-of-use rates are not included. A 100 W lamp used 5 hours consumes 0.5 kWh. The calculation validates each input and keeps its stated units explicit. Multiply kW by hours; 1,000 watts used for one hour is 1 kWh. This is an estimate for the stated assumptions; confirm measurements and any applicable professional or local standards before relying on it.
Electricity Calculator is calculated from the supplied measurement fields using the units shown.A 100 W lamp used 5 hours consumes 0.5 kWh.
Assumptions & useful context
The result depends on the values you enter and the method described above. Displayed numbers may be rounded; calculations use the unrounded values. Check that this model matches your situation before relying on it.
Frequently asked questions
How do watts become kilowatt-hours?
Multiply kW by hours; 1,000 watts used for one hour is 1 kWh.
Does the estimate match a utility bill?
It covers usage energy only; billing structures add other charges.