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How Many Watts Does a LG TV Use? (Quick Answers)

Among the numerous television manufacturers, LG has emerged as a competitive brand with its wide range of TVs and TV sizes. If you are wondering about the wattage of one, you have come to the right place.

Watts usage for a LG tv

The number of watts consumed by a LG TV depends on the size and type of the TV. Generally, the 32-inch LG TVs pull 40 watts, and the more giant 75-inch TVs use about 115 watts. Additionally, the TVs also require less than a watt for standby mode. When in use, the wattage ranges from 40-120 watts.

The wattage of a product depends on the size and requirements. Therefore, a large TV will require more watts to function optimally than a smaller one. Additionally, some TVs, such as the ones with plasma or LCD screens, consume more power than those with LED screens or better.

Generally, TVs use approximately 40-150 watts. In the descriptions, we assume the TV consumes 100 watts per hour.

Per hour:

Normally, TVs use about 40-150 watts. You can expect your television to pull about 100 watts of power per hour. Therefore, assuming you have a 42-inch TV, it will consume 100 watts per hour.

Per day:

A 42-inch LED TV will consume approximately 100 watts of power per hour. Using this value, we can calculate the number of watts it will use per day. 

To calculate the wattage of your TV per day, you have to multiply the amount of power consumed per hour by the number of hours you watch TV per day. For example, the average time most adults spend watching TV is 3 hours. 

In this scenario, we will multiply 100 with 3. The result is 300 watts or 0.3 kilowatts per day.

Per month:

Assuming your LED TV consumes about 100 watts per hour, it is easy to compute the wattage your TV uses in a month. We will assume you watch TV for about 3 hours per day. 

To find how much power the TV will consume per month, we will multiply the number of watts the TV uses per hour by 3 and 30. Therefore, we will multiply 3 by 100, which results in 300 watts. Then, we will multiply 300 by 30. 

We get 9000 watts or 9 kilowatts, the amount of power your TV consumes per month.


Modern TVs do not have any startup power surges so the power consumption remains constant. Therefore, if your TV consumes 100 watts of power, it will not use more than that while it is turning on. 

So, you will not have to worry about startup power consumption.

Here are the basic calculation methods you can use to figure out how much power your TV consumes. Understanding the power consumption will help you judge your electricity charges.

How many watts does a lg smart tv use?

Recently, with the invention of the Smart TV, more and more people are buying it for themselves. Smart TVs are more efficient, allowing them to save more electricity. Additionally, they come with features and apps you can get on your smartphones.

Smart TVs have a standby mode which keeps them on but decreases the power consumption. In standby mode, a LG Smart TV will use 0.5 watts of power as only limited features are on. The standby mode keeps the TV ready to receive signals from the remote to turn on.

While running, you can expect a LG Smart TV to use approximately 150 watts of power on average. The power consumption will vary depending on the media you are viewing and any other peripherals connected to it. 

Additionally, LG Smart TVs can adapt and lower the power consumption. 

How much does it cost to run a lg tv use per month?

LG has a wide range of TV sizes, from 32-inch to 75-inch. Here is a list of all the TV sizes with how much power they consume per month. For the list below, we assume you watch TV for 1 hour a day a month.

32-inch tv:

32-inch TVs use 25 watts of power, on average. During the standby mode, these use approximately 0.5 watts of power. You can expect your 32-inch TV to use around 750 watts per month.

40-inch tv:

On average, 40-inch TVs use approximately 35 watts per hour while running. Therefore, you can get the idea that your TV will consume around 1050 watts or 1.05 kilowatts of power per month.

42-inch tv:

42-inch TVs generally use about 80 watts of power per hour. As a result, if you watch TV for only 1 hour per day for a month, your TV will consume around 2400 watts or 2.4 kilowatts of power per month.

55-inch tv:

As the size of the TV increases, the power consumption increases too. A 55-inch TV will pull in about 82 watts of power per hour. You can expect your TV to consume about 2460 watts or 2.46 kilowatts 

58-inch tv:

A 58-inch TV uses 82 watts of power per hour and around 2460 watts or 2.46 kilowatts per month like a 55-inch TV.

60-inch tv:

60-inch TVs are more efficient than the smaller models and consume about 75 watts of power. The power efficiency increases as TVs of these sizes usually use LED panels. So, your TV will use only 2250 watts or 2.25 kilowatts per month.

65-inch tv:

Unlike 60-inch TVs, a 65-inch TV tends to consume significant power, about 95 watts per hour. So, you will be consuming about 2850 watts of 2.85 kilowatts of power per month by watching TV.

75-inch tv:

A 75-inch TV will be a great addition to your living room or bedroom, wherever you want to feel immersed in entertainment. However, they require about 115 watts of power per hour and around 3450 watts or 3.45 kilowatts per month,

These are some of the sizes of TVs LG has to offer. Knowing the power consumption of the different models will help you decide which TV you can use and the charges you will incur at the end of the month.

What factors determine lg tv watt usage?

When it comes to power consumption, several factors determine the amount of power used by a LG TV. Here are the factors:

TV size:

The major factor that determines how much power your TV consumes is the size of the TV. If you are running a 32-inch TV, the power consumption will be relatively less than that of a 65 or 75-inch TV. 

The bigger the screen, the more the amount of power required for the TV to function.


Nowadays, TVs have two modes, the standby mode and the on mode. In standby mode, the TV uses negligible power as it only keeps limited features on. On the other hand, when the TV is on and running, the power consumption is higher. 

Also, there are other modes built into the system of the TV to save power, for example, the power saving mode.


You can use a TV for multiple purposes now thanks to the evolving technology. If you are using the TV to just watch movies, series, or the news, you will not be utilizing all the features of the TV and it will not be under a heavy load. 

So, power consumption will be low. However, using the TV for gaming or other heavy purposes will require most of the features to work, causing it to consume loads of power.

These are some of the factors you should consider while understanding the power consumption of your TV.

How do I check the power consumption of my lg tv?

Checking the power consumption of a LG TV is simple and you can do it effortlessly by following the steps below:

Find the rated wattage:

Usually, the rated wattage is printed on the label attached to the body of the TV. If you do not find it on your TV, you can search for the wattage online using the TV model number.

Multiply the rated wattage with operational hours:

Multiply the rated wattage that you obtained previously with the number of hours you use the TV. Let’s say your TV consumes 100 watts per hour. So, multiply 100 by 1 and you will get 100 watts, the amount of power consumed by your TV in an hour.

It is a simple task to calculate the power consumed by your LG TV. You can do it yourself with just a calculator.

Final Thoughts

Most LG TVs are energy efficient and do not require too much power. On average, your TV consumes about 50 to 100 watts per hour. If you wish to control the power consumption, limit the factors, and you will be good to go. You can also check how much your TV consumes by yourself.