Electricity Cost Calculator
Find out exactly how much any appliance costs to run — per day, month and year.
Project
Devices & Appliances
Add each device. Check the watt rating on the label or plug.
Results
Based on rated wattage at full load. Actual consumption may vary with usage patterns and standby power.
Typical wattage reference
How much does it cost to run common appliances?
How much does it cost to run a fridge? +
A typical fridge-freezer draws around 150 W and runs continuously. At €0.28/kWh that is roughly €30/month or €366/year. An A+++ energy-rated model uses about half that — around €15/month. The fridge is often the single biggest always-on electricity cost in a home.
How much does it cost to run a tumble dryer? +
A standard tumble dryer uses 3000 W per cycle (approx. 1 hour). Each cycle costs around €0.84 at €0.28/kWh. Running 4 cycles a week adds up to roughly €175/year. Heat pump dryers use 50–60% less energy — typically 1000–1500 W.
How much electricity does a TV use per month? +
A 55" LED TV uses around 100 W. Watched 4 hours/day at €0.28/kWh: ~€3.40/month or €40/year. A 75" TV may use 150–200 W, doubling the cost. OLED screens typically use more power than LED at the same size.
How much does it cost to charge an electric car at home? +
A 7 kW home charger running 8 hours adds 56 kWh — enough for 200–350 km depending on the car. At €0.28/kWh that is €15.68 per charge session. Charging 3× per week costs roughly €190/month — though many drivers pay less by charging overnight on cheaper tariffs.
What uses the most electricity in a home? +
In order of typical annual consumption: space heating (electric radiators or heat pump) → water heating → tumble dryer → oven → EV charging → fridge/freezer → washing machine. Lighting and phone chargers are minor by comparison. Cutting heating and drying costs has far more impact than switching off standby devices.
How do I calculate electricity running costs? +
kWh/day = (watts × hours used per day) ÷ 1000. Multiply by your tariff (price per kWh) for daily cost. Then × 30.44 for monthly, × 365 for annual. Find the wattage on the appliance label, plug or manual. For appliances that cycle (fridge, heat pump), the rated wattage is peak draw — real consumption is lower.
More about electricity costs and kWh
What is a kWh?
A kilowatt-hour (kWh) is the unit on your electricity bill. One kWh = running a 1000 W appliance for one hour, or a 100 W appliance for 10 hours. Multiply kWh by your tariff to get the cost in your currency.
Where do I find the wattage?
Check the label on the device, the plug, or the product manual. For appliances that cycle on and off (fridge, heat pump), the rated wattage is the peak draw — actual average consumption is lower. Use the energy label kWh/year figure if available, as it accounts for real usage cycles.
What about standby power?
Most modern devices draw 1–5 W on standby. Across 10 always-on devices that adds 10–50 W constantly — worth eliminating with smart plugs if you want to reduce your base load.