Even if the subject of kilowatts isn’t something friend think around every day, it’s absolutely something that affects your day-to-day life. Girlfriend see, a watt is the simple unit that measurement supplied for electrical power. The term “watt” comes from James Watt that Scotland, one engineer, entrepreneur, craftsman, instrument maker, and also scientist who is often referred to together the dad of the commercial Revolution. Among his many notable achievements was about 1775, as soon as he developed the Watt heavy steam engine. Today, heavy steam turbines at thermal power plants use this same an innovation to transform thermal power into mechanically energy. Us measure that electric power in kilowatts.  

In this guide, us take the complicated subject of kilowatts and simplify that into much more relatable terms. Here, you’ll obtain a much better understanding that what kilowatts are, plus we’ll sheathe things prefer what us measure in kilowatts, how we convert and calculate kilowatts, and also how kilowatts differ from kilowatt-hours, megawatts, and also gigawatts. 

What Is a Watt? What Is a Kilowatt? 


Before we discuss kilowatts, let’s take it a 2nd to talk around watts (W). Watts are the an easy unit of power used to measure up electric, thermal, and also mechanical power. One watt is equal to one joule, as well as one volt-ampere. Every one of these terms measure electric power.   

Now, let’s obtain into a more detailed description of what a kilowatt (kW) is. Most simply, a kilowatt is another term used in the measure up of power. Many frequently, we usage kilowatts to measure up residential and also commercial power.   

Keep in mind that the prefix “kilo” way one thousand. It may be much easier for you to remember the one kilowatt amounts to 1,000 watt of electrical power once thinking that the prefix’s meaning. For example, a microwave through a 1,000-watt label requires 1,000 watts worth of power (or 1 kW) come work.  

How carry out You transform Watts right into Kilowatts? how Do You transform Kilowatts come Watts?  

The switch of watts to kilowatts is just as straight-forward together you may have guessed. We discover the strength in kilowatts P(kW) by separating the power in watts P(W) through 1,000. 

Here’s the Formula for Converting Watts right into Kilowatts: 

P(kW) = P(W) / 1,000 

For example, if you wanted to transform your 1500W dishwasher come kilowatts, girlfriend would perform the complying with calculation:  

P(kW) = 1,500W / 1,000 = 1.5kW 

Here’s another way to think of the that may make the mathematics easier. Include a decimal allude at the end of your totality number. In this case, it’s 1500. Then, since there are three zeros in 1,000, i beg your pardon is the number you’re dividing by, friend will relocate the decimal suggest three digits, or three spaces, come the left. You finish up with 1.500, or 1.5. This trick renders it really easy to convert watts into kilowatts v some rapid mental math. 

Here’s the Formula because that Converting Kilowatts right into Watts: 

Since we understand that one kilowatt is tantamount to 1000 watts, we reverse the operations over to fix this equation.  

1kW = 1000W  P(W) = 1000 × P(kW) 

For example, if you recognize that your dishwasher offers 1.5kW, you would do the equation below to find that her dishwasher is a 1500W appliance or requires 1500W of strength to work.  

Convert 1.5kW come watts:  P(W) = 1000 × 1.5kW = 1500W 


How many Kilowatts space in a Megawatt?   


We use megawatts once measuring strength on a much larger scale. If you wanted to know how much power is produced by a strength plant or exactly how much electrical power is required to power an entire city, girlfriend would usage megawatts. For example, a typical coal power plant is about 600 MW in size.  

To proceed along the route of keeping things simple, usage the same formula used above to convert kilowatts to megawatts (MW). Why is that? Well, because 1,000 kilowatts are equal come — you guessed the — one megawatt. 

Here’s the Formula to convert Kilowatts come Megawatts: 

P(MW) = P(kW) / 1,000 

This formula also way that if friend would prefer to convert watts to megawatts, you have to include three more zeros to her equation. The strength in megawatts P(MW) can be discovered by dividing the strength in watt P(W) by 1,000,000. 

Here’s the Formula to transform Watts come Megawatts: 

P(MW) = P(W) / 1,000,000 

For example, if you transform a 100-watt light pear to megawatts, girlfriend will execute the following calculation:  

P(MW) = 100W / 1,000,000 = 0.000100MW 

How plenty of Megawatts space in a Gigawatt? 

Suppose you’re searching for an even larger measure up unit. In that case, you’ll desire to usage gigawatts, which we usage to measure exactly how much power huge power plants or numerous plants can generate together. In 2012, the complete capacity of joined States electrical energy generating plants was about 1,100 GW.  

You’ve likely noticed a pattern creating here. In that case, you may have a an excellent idea regarding what the formula is for converting megawatts to gigawatts (GW). If girlfriend guessed the there room 1,000 megawatts in one gigawatt, you would certainly be correct. That fun fact method that there are 1,000,000 kilowatts in one gigawatt and 1,000,000,000 watts in one gigawatt. Whew! 

What space Kilowatt-Hours? room Kilowatt-Hours different Than Kilowatts? 


 Now, here’s where things can acquire a little confusing. A kilowatt-hour (kWh) is a measurement of just how much energy is used. However, this is no actually the very same as measure the number of kilowatts you usage per hour due to the fact that power and energy room not the same. Instead, a kilowatt-hour actions the lot of time, or the amount of energy, that takes to usage one kilowatt the power.   

The quantity of energy used if a 1,000-watt appliance runs for one hour is same to one kilowatt-hour. The reduced the wattage an item has, the better.   

Here’s one example: If you to be to use a 100-watt irradiate bulb, it would certainly wield one kilowatt-hour of energy after 10 hours of use. But, if friend switched come a an ext energy-efficient light bulb that just requires 40-watts to create the very same amount that light, it will take 25 hours to usage one kWh the energy. Imagine the energy savings friend could attain by switching out every one of the lightbulbs in her home.  

Just like measuring power consumption, when you calculate the lot of power used or produced on a bigger scale, friend would use megawatt-hours (MWh) or gigawatt-hours (GWh).  

How do I calculate the Energy usage of an electric Appliance? 

How Is My power Use in Kilowatt-Hours Calculated?

Much choose one kilowatt is same to 1,000-watts that power, one kilowatt-hour is equivalent to 1,000-watts, or joules, of power use over one hour. If you wanted to convert watts right into kilowatt-hours to discover out exactly how much energy your coffee maker consumes each day, you would multiply the power intake in watt by the number of hours used. Then, divide that number by 1,000. 

Here’s the Formula because that Calculating Watts into Kilowatt-Hours: 

kWh = (watts × hrs) ÷ 1,000 

For example, to uncover the kWh the 1,200 watt for 3 hours:  

kWh = (1,200 × 3) ÷ 1,000  kWh = 3,600 ÷ 1,000  kWh = 3.6 


How execute I convert My Energy usage of Kilowatt-Hours right into Watts? 

Suppose you were interested in law the turning back to determine how plenty of watts your coffee an equipment is, based upon its kilowatt-hours. In that case, you might easily carry out so by making a few simple adjustments come the formula.  

For this conversion, main point the energy used in kWh by 1,000 to discover the energy usage in watt-hours. Then, you have to divide that number by the number of hours you used it. 

Here’s the Formula because that Calculating Kilowatt-Hours into Watts: 

watts = (kWh × 1,000) ÷ hrs 

For example: let’s find the watts of power for 3.6 kWh of power used in 3 hours.  

watts = (3.6 kWh × 1,000) ÷ 3 hrs  watts = 3,600 ÷ 3 hrs  watt = 1200 W  

What walk One Kilowatt-Hour of electrical Energy Cost? 


Most utility service providers calculate your electrical power bill based upon how many kilowatt-hours, or units of power you usage each month. Since the clinical unit of energy is measure in joules, girlfriend will frequently see your energy usage listed in joules on your electric bill. Remember, one joule is equal to one watt. If you can convert watts to kWh, you have the right to predict exactly how much it might cost to operation your various electric appliances and also devices. 

In 2020, Idaho residents paid the lowest average power rates in the U.S. At 9.67 cent per kWh. In extreme contrast, citizens in Hawaii payment the most, v their typical 2020 power rates coming in approximately 28.84 cents per kWh. 

How carry out I calculate the intake of an electrical Appliance? exactly how Do I estimate What My electricity Bill will Be? 

Let’s usage the national average rate of around 13 cent per kWh come calculate how much it costs to strength a 100-watt light bulb every hour. Due to the fact that it take away 100 watts of strength to job-related — to convert the power in watts to kilowatt-hours — you will certainly multiply 100 watt by one hour. Then, you’ll divide by 1,000 to find the energy intake in kWh.  

Energy = (100 × 1) ÷ 1,000  Energy = 100 ÷ 1,000  energy = 0.1 kWh  Hourly expense = electricity expense per kWh ÷ power use in kWh  Hourly cost = $0.13 ÷ 0.1 kWh  Hourly cost = 1.3 cents 

If electricity prices 13 cent per kWh, climate a 100-watt light bulb will price 1.3 cent for every hour the it’s on. Most electric bills room calculated monthly. To calculation your monthly costs, you can follow these steps:

Estimate how numerous hours every day you use that light pear on average. (Let’s say it’s 5 hours).

Multiply the irradiate bulb’s watts by the average number of hours you use it day-to-day instead of the one hour offered in the formula above. (Let’s say her light bulb is 60 watts, so that you would certainly calculate 60 watt x 5 hours).Solve the equation over using your light bulb’s yes, really wattage and also the yes, really average number of hours you use that light bulb per day. (60 x 5 = 300 ÷ 1,000 = 0.3 kWh). Multiply her answer by 30 to acquire the monthly average kWh for the light bulb. In this case, $0.43 x 30 job = $3.90. It would cost you $3.90 every month to leave a 60-watt light pear on for an average of 5 hours per day, every day.  Repeat this equation for all light bulbs, appliances, and also other electrical gadgets in your home.   Add increase the total to uncover your approximated monthly electricity prices in kilowatt-hours. You may be surprised to watch how rapid it all adds up. 

How plenty of Kilowatt-Hours does the average U.S. Household Use per Day? 


Now that you know all about how to calculation the kWh the energy consumption you use, it might be exciting to to compare your power use to rather in the joined States. The average home in the U.S. Consumed 887 kilowatt-hours (kWh) of electrical energy per month in 2019, which breaks under to almost 30 kWh per day. If you’re curious to watch where you stand contrasted to others in her specific region or state, inspect out this data noted by the U.S. Energy information administration. 

How many Kilowatts need to a Generator it is in to run a House? 

If girlfriend live in an area vulnerable to weather that could an outcome in power outages, you can give yourself a little peace of mind by investing in a generator. Freezers, lights, refrigerators, and well pumps are simply a few of the appliances you can keep running during a strength outage.   

The most an important household equipment can be run through a 5,000 to 7,500 watt rated generator. If girlfriend would favor your entire house to proceed operating, you will likely need to walk larger. If you have actually fewer appliances, you may have the ability to get away through something smaller. Determining the wattage that your important appliances will help you figure out what size generator you will need. 

What’s the Difference in between Watts and also Amps? 

Watts and also amperes, additionally known as amps, room both units provided to measure electrical power usage or production. Every electronic tools have their energy consumption provided on their brand in either watts or amps. If the label on your maker lists amps, you deserve to calculate the wattage by making use of a basic formula. 

Here’s the Formula because that Calculating Amps to Watts: 

Wattage = Amps x 120  


For example, if you have actually a 120V maker with a 20 amp label, that’s tantamount to a wattage the 2400. In equation form, that is: 20A x 120V = 2400W 

What Is the Kilowatt-Peak?  


Kilowatt-peak (kWp) refers to the rate a system have the right to generate energy during its top performance, which is once it’s functioning at its maximum capacity. Us most typically use kWp for solar electrical energy systems. This systems are labeled with a rating in kilowatts optimal (kWp) so that consumers can compare the output capabilities and also size of various photovoltaic panels.   

A 2 kWp device will develop 2 kW of electric power only during the brightest sunshine when all problems are at their best. Standard modules take around 6.25 square meter of roof room for every kWp. Greater efficiency modules use only five square meter of roof space. 

How an innovation Is an altering the energy Industry 

There’s no question that an innovation has improved by leaps and also bounds end the years. Points aren’t any kind of different in the energy industry. Let’s take it a look at two great examples. 

How lot Does It expense to charge a Tesla? 

Tesla has been approximately since 2003, but now that electrical cars space becoming much more common, they’re likewise becoming much more affordable. As gas prices are going up, the expense to charge electrical vehicles is going down. Take it a look in ~ this example which explains how lot it prices to fee a Tesla version 3 at a house charging station:  

The battery volume is 75kW, and also our current average power rate that we’re going to use is 13 cent per kWh  This method that your charging expense is equal to 75 x $0.13 = $9.75 for a complete “fill up” that will get you about for about 240 miles. 

Measuring Your energy Use Is straightforward With a smart Meter 

Smart meters automatically send her daily and also hourly energy consumption data to your utility company’s main computer system.

You are watching: Use this fact to convert 1 kilowatt-hour into joules.

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This technology provides real-time data allowing both parties an thorough look into current intake habits, remove the need for meter readings.   

Smart meters enable consumers accessibility to details on how, when, and also where utilities room used, make it simple to make changes when necessary.  

Now You understand Kilowatts 


 Now that you know how to usage your newfound expertise of kilowatts to save energy, you may be interested in discovering about much more ways to save on your electric bills. Check out the energy Savings marketplace whereby researching your energy choices is easy, plus learn much more about gaining started ~ above your course towards energy conservation today.