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Free electricity calculator to estimate electricity usage as well as cost based on the power requirements and usage of appliances.
Estimate your home's electric use with a kWh calculator. Input home details for a customized estimate. Find the best electricity plans and rates for your usage.
The following example shows how to calculate your electrical energy and power consumption “Wh” and “kWh” on a daily, monthly and annual basis. To do this, you must know the wattage rating of the device in watts (or voltage x current rating = power rating) and the operation time of the appliance in hours.
The power consumption calculator calculates how units of electricity (kilowatt-hours or kWh) a device draws per hour, per day, per week, and month. How to compute electric consumption? You only need to know the wattage of the unit, and how long you run it at that wattage.
Our appliance and electronic energy use calculator allows you to estimate your annual energy use and cost to operate specific products. The wattage values provided are samples only; actual wattage of products varies depending on product age and features.
Once you know your electricity consumption per day, you can multiply it by the unit cost and the number of days in a month; you get the monthly cost. To use the calculator for appliance electricity cost: Add an appliance from the list using the add button. Enter the power rating for the added appliance. Insert the quantity of the said appliance.
Calculate electricity usage for your home or for any device or appliance. Understanding how much energy your household appliances use can help you save money and reduce your environmental footprint.
In this power consumption guide, learn how to calculate kWh per month, estimate your energy bill, and take control of your electricity costs.
Below, you’ll find our Energy Consumption Calculator, which helps you estimate your energy consumption in both Watt-hours (Wh) and kiloWatt-hours (kWh) based on: The appliances you use. Their Power Usage (in Watts). Their daily usage duration (in hours). The number of days in which you use each appliance.
Calculate the energy usage for your home or individual appliance. Quickly see how much energy it uses and how much it costs to keep it powered.