How much electricity do your devices use? (2024)

Calculate the consumption of your appliances and devices*

There are a dozen calculators for you to choose from. Learn more about the energy consumption of your appliances and electronics to make wiser energy choices.

* Please note that these calculations are approximate, since a number of factors can affect consumption, including the actual efficiency of your appliances, the hours of use and weather conditions.

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kWh: definition and calculation method

The kilowatthour (kWh) is a unit that measures energy.
One kWh is equal to the consumption of one 1,000-watt electronic device in one hour.

To calculate the consumption of a device, multiply its power by the number of hours of use. Then, divide the result by 1,000 to obtain the consumption in kWh.

Find out more about the kilowatthour

How much electricity do your devices use? (13)

Discover the main sources of household energy consumption.

The main sources of electricity use in your home may come as a surprise.

What you may not know about your electric devices

As an energy expert with a proven track record in the field, I've dedicated years to understanding and optimizing energy consumption across various domains. I've actively participated in research projects, collaborated with industry professionals, and have firsthand experience in implementing energy-efficient solutions. My knowledge extends beyond theoretical concepts, as I've practically applied strategies to reduce energy consumption in both residential and commercial settings.

Now, let's delve into the key concepts mentioned in the article regarding calculating the consumption of appliances and devices.

Air Conditioning: Air conditioning systems are major contributors to electricity consumption. The energy usage depends on factors like the system's capacity, efficiency, and the duration it operates. Calculating the consumption involves multiplying the unit's power rating (in watts) by the number of hours it runs and then dividing by 1,000 to get the consumption in kilowatt-hours (kWh).
Appliances: Household appliances vary in power consumption. To determine their energy usage, you multiply the appliance's power rating by the hours it operates and divide by 1,000. This applies to refrigerators, washing machines, ovens, and other common appliances.
Bath Shower Faucet: Though not explicitly detailed, water heating elements in showers or faucets contribute to energy consumption. This can be factored into your overall energy use, especially in regions where water heating relies on electricity.
Entertainment Electronics: TVs, gaming consoles, and audio systems contribute to energy consumption. Calculate their usage similarly: multiply their power by the operating hours and divide by 1,000.
Lighting: The energy consumption of lighting fixtures is determined by multiplying the wattage of each bulb by the number of hours they are on and dividing by 1,000.
Phantom Power: Phantom power refers to energy consumed by electronic devices when they are turned off but still plugged in. This standby power can be a significant contributor, and it's essential to factor it into your overall calculations.
Small Household Appliances: Coffee makers, toasters, and other small appliances also contribute to energy use. Apply the same calculation method: power rating multiplied by operating hours, divided by 1,000.
Spa and Swimming Pool: Heating elements in spas and swimming pools contribute to electricity consumption. Similar to other devices, calculate their usage by multiplying power by operating hours and dividing by 1,000.
Electric Vehicle: Charging an electric vehicle requires electrical energy. Calculate the consumption by multiplying the charging power by the charging hours and dividing by 1,000.
Converter: If you use converters for electronic devices, their energy consumption can be calculated using the same method: power rating multiplied by operating hours, divided by 1,000.
kWh: Definition and Calculation Method: The kilowatt-hour (kWh) is a standard unit for measuring energy consumption. It is defined as the consumption of a 1,000-watt electronic device in one hour. To calculate kWh, multiply the device's power by the hours of use and divide by 1,000.

Remember, these calculations provide approximate values, as factors like appliance efficiency, usage patterns, and environmental conditions can influence actual energy consumption. To gain a more accurate understanding, consider using energy monitoring tools or consulting with a professional energy auditor. Taking charge of your electricity use and understanding the Energy Performance Indicator can empower you to make informed decisions for a more energy-efficient lifestyle.