#Kwh to kw conversion how to
#Kwh to kw conversion full

a new 15' MacBook Pro, that charges at 87 watts.Let's assume you have the following devices, with the following watts ratings: You also want a battery so you can power your devices in the evenings. Luckily, calculating how many kilowatt hours you need when choosing a battery is also quite simple.įor example, let's say you are planning on installing solar panels on the roof of your camper van. Next, you may want to know how large of a battery you'll need as backup for your solar panel system.

#Kwh to kw conversion how to

Here's how to calculate the total kilowatt hours consumed: (970 W × 4 hrs) ÷ 1000 = 3.88 kWhĬompared to the light fixture we looked at earlier, air conditioners use a lot of electricity! How to Calculate Kilowatt Hours for a Battery We'll assume we want to run this air conditioner for just 4 hours during the afternoon. In this case, we're given the total watts rating for the air conditioner of 970 watts. This is a sticker located on the side of the unit. The next photo shows the electrical specifications for the air conditioner. Let's look at a real-world example of calculating kilowatt hours for a common household appliance, a room air conditioner. As long as the total watts is less than or equal to 500 W, you're good to go! How to Calculate Kilowatt Hours for an Appliance This rating is usually found on a sticker on the appliance itself, or you can easily look it up via an internet search. To see what appliances or devices you could power, simply add up the watts rating for each. So the amount of power available for your workspace during this 6 hour period is 500 watts. Here's how to calculate the total watts available to use: (3 kWh ÷ 6 hrs) × 1000 = 500 W

#Kwh to kw conversion full

In this example, let's assume that your solar panel system receives 6 hours of full sun during a typical summer's day.

You want to know what appliances or devices you could run inside your workspace during this typical day. You know the average amount of kilowatt hours your system typically produces each day during the summer is 3 kWh.

You may run into a situation where you know the number of kilowatt hours, and you'd like to figure out watts.Īll you need to do to calculate watts from kilowatt hours is to first multiply kilowatt hours times 1000, then divide by number of hours.įormula: watts = (kilowatt hours ÷ hours) × 1000Ībbreviated: W = (kWh ÷ hrs) × 1000 Exampleįor example, let's say you've installed a small solar panel system to power the workspace in your garage. How to Convert Kilowatt Hours to Watts (kWh to W) Converting watts to kilowatt hours will help you determine how large of a battery to use in your system. Many solar panel systems also incorporate a battery, for additional energy storage either in the evening or on a cloudy day. It is also important to calculate your total energy usage in kilowatt hours when choosing a backup battery. Kilowatt hours is a measurement of this energy consumption, which is the same thing as power consumed over time. When powering your devices with solar energy - whether that's in your home, garage, or camper van - you must know your total energy consumption in order to choose the correct size and number of panels. This rating lets you know the amount of power the device uses at any given moment. Simple! Why Convert Watts to Kilowatt Hours?Īny appliance or device that uses electricity will have a watts rating. So the light's total energy consumption for that evening is 0.24 kilowatt hours. Here's how to calculate the light's total energy consumption in kilowatt hours: (60 W × 4 hrs) ÷ 1000 = 0.24 kWh

First, multiply watts times hours, then divide by 1000.įormula: kilowatt hours = (watts × hours) ÷ 1000Ībbreviated: kWh = (W × hrs) ÷ 1000 Exampleįor example, let's say you have a light fixture that uses one 60 W lightbulb, and you leave it on for 4 hours in the evening. How to Convert Watts to Kilowatt Hours (W to kWh)Ĭonverting watts to kilowatt hours is easy. Here is a conversion chart converting common values of watts to kilowatt hours, over a duration of one hour and one day. Or would you rather convert kilowatt hours to watts? Watts to Kilowatt Hours Conversion Chart Conversion formula: kWh = (W × hrs) ÷ 1000