What is a kilowatt-hour?

A kilowatt-hour is a unit of measure for using one kilowatt of power for one hour. Just knowing what a kilowatt-hour is and what it can power can save you money on your electricity bill.

How to calculate power consumption in kWh?

To calculate power consumption in kWh, follow these steps: Power Consumption (Annual) = Power Usage (Watts) x Time (Hours) x 365 (Days). For example, a 1700 Watts electric kettle running for 1 hour daily will consume 620,500 Wh or 620.5 kWh in one year.

How many kWh does an electric water heater use a day?

To calculate the daily power consumption of an electric water heater, use the formula: Daily Power Consumption = Wattage rating x time in hours. For a 2kW water heater running 3 hours per day, the daily power consumption is 6 kWh.

How much electricity does landscape lighting use?

Happily, electricity bills are recorded in kilowatt-hours (kWh). A kilowatt is simply 1000 watts. So a 60W landscape lighting running for 1 hour uses 0.6kWh. In reality, you use landscape lights for 4 hours an evening. This means a medium sized lighting system uses about 240Wh or 0.24kWh electricity a day.

How do you calculate watt hour and kilowatt hour consumption?

To calculate daily and annual power consumption, use the following formulas: Daily Power Consumption (Wh) = Power Usage (Watts) x Time (Hours). Monthly Power Consumption (kWh) = Daily Power Consumption (Wh) x 30 (Days). Annual Power Consumption (kWh) = Daily Power Consumption (Wh) x 365 (Days). For example, a 25-watt LED light bulb operating 8 hours daily consumes 200 Wh per day and 6 kWh per month.

How can I calculate my electricity usage?

To calculate electricity usage, enter the electric appliance in the dropdown menu or manually enter the wattage rating in watts or kilowatts (kW) and the daily usage in hours. Then, click the calculate button to determine the daily, monthly, and annual power usage or energy consumption in kWh.