How Many Watts Does A Laptop Use

How Many Watts Does A Laptop Use

How many watts does a laptop use? This is one of the most common questions about laptops.

The answer to this question varies depending on what you are using your laptop for, how old it is, and what kind of power source you are using.

Do you know how much electricity your laptop is using? Well, it’s not just the amount of time that you’re on your laptop. It also depends on what tasks are being done and for how long. 

The average computer user will use about 30 watts an hour when browsing Facebook or watching Netflix. This number can jump up to 60-100 watts per hour if they are gaming or editing a video with their laptop plugged in at the same time.

But don’t worry! The good news is that laptops have become more energy-efficient over time so these numbers are lower than normal 5 years ago! Laptop users should be able to get anywhere from 6-12 hours of battery life before needing to recharge depending on which model they own and what they are using it for.

How many Watts does a Laptop Use?

How Many Watts Does A Laptop Use

This answer also varies with laptops. Laptops that use more wattage will have shorter battery life. For example, if you are using an older laptop that uses 65 watts, then you can only expect 3 hours of battery life. However, if you are using a newer model laptop that uses about 30 watts, then you can expect 8 hours of battery life.

What Uses The Most Wattage on a Laptop?

The answer to this question may surprise you. It’s not the screen or even the processor that uses the most energy, but rather the Wi-Fi and Bluetooth radios! So, if you’re looking to save some power on your laptop, make sure to turn off these features when you’re not using them.

Laptops that use AC power will draw more wattage than those that use battery power. This is because the AC adapter has to convert the 120-240 volts of electricity from the wall outlet into the lower voltage needed by the laptop. So, if you want to save power on your laptop, plug it into a power strip that has an off switch. This means you can simply turn off the strip whenever you’re not using your laptop instead of having to unplug the adapter itself!

Factors That Uses The Watts On Laptops:

Battery Usage

The most important of these factors is battery usage. Even if you are plugged into a power supply, your laptop will have to use some power from the battery for it to run the device.

Source Of Power(AC/DC)

There are two types of sources of power for laptops, these being AC(Alternating Current) and DC(Direct Current). When plugged in, the laptop is running off AC. This can be expected to use more wattage than if it were pulling the same amount of watts from a DC source.

Computer Model Type

There are different types of computer models, these being laptops, notebooks, and netbooks. Laptops use more wattage than notebooks, which in turn use more wattage than netbooks.


Older laptops will generally use more watts than newer laptops. This is because the newer laptops have been designed to be more energy-efficient.

Activity Being Done

The more active the task being done on the laptop, the more watts it will use. This is because more energy is needed to power components that are in use, such as the CPU and the graphics card.

Adapter Type

The type of adapter is used also has an impact on how many watts the laptop uses. Laptop adapters come in 65W, 45W, and 30W varieties. The more powerful the adapter, the more watts the laptop will use.

Monitor Brightness Settings

The monitor brightness settings also use power but this is one of the most negligible factors in laptop usage.

Now that you know some of the factors that affect how many watts a laptop uses, you can make an estimate of how much electricity your laptop is using.

How Much Wattage does a Laptop Use Per Hour

On average, a modern laptop uses about 25.5 watts each hour it is in use. This means that an average laptop will cost you about $1 per month to run ($12 for a half-year), assuming a rate of 10 cents per kWh.

Total usage varies depending on screen size, how often the computer is used, battery type and size, and even the age of the laptop.

How Many Watts Does a Laptop Charger Use?

Chargers also use wattage, but it is usually much lower than that of the laptop. For example, most phone chargers use 5 watts or less. So, if you’re looking to save some energy, try not to leave your phone charger plugged in when you’re not using it.

How Many Watts Does a Laptop When Charging?

The wattage used to charge a laptop varies depending on the model. For example, an HP laptop that is plugged into an outlet will use about 45 watts when charging. Therefore, if you are using this kind of laptop, expect it to use up to 90 watts per hour when it’s plugged in and being charged.

How Many Watts Does a Gaming Laptop Use?

Gaming laptops use a lot of wattages! A high-end gaming laptop can use up to 250 watts of power, which is more than 10 times the amount that a regular laptop uses. So, if you’re looking to save some energy, make sure not to game on your laptop when you don’t have access to a power source like an outlet.

How Many Watts Does a Laptop Computer Use?

Laptops computers use an average of 25.5 watts while in use, which is about 1/4 the power usage of a desktop computer. Laptop computers that are used with an AC adapter will draw more power than those using a battery. The wattage required to charge a laptop also varies by model.

How Many Watts Does a Lenovo Laptop Use?

Lenovo laptop uses wattage depending on the type of battery. For example, if your Lenovo laptop has a 4-cell lithium-ion battery, it will use 33 watts per hour when plugged into an outlet and charging. This would be equivalent to about 3.5 watts each hour if it were running on batteries.

How Many Watts Does a Mac Laptop Use?

Mac laptops draw 18.5 watts while in use, which is slightly more than half that of a typical Windows laptop. Apple chargers also have the advantage of being able to detachable wire connections, so you won’t waste power by having one plugged in when not needed.

How Many Watts Does a Toshiba Laptop Use?

Toshiba laptops run at about 25.5 watts while in use, and this value can change depending on the type of battery that is installed. For example, if you have a 3-cell lithium-ion laptop, it will draw about 19 watts per hour when plugged into an electrical outlet and charged.

How Many Watts Does a Dell Laptop Use?

Dell laptops use about the same amount of wattage as other Windows laptops- 25.5 watts while in use.

How Many Watts Does a HP Laptop Use?

HP laptops tend to use more wattage than other brands, with an average of 45 watts per hour. The wattage used by the laptop will also depend on whether or not an AC adapter is being used. For example, HP laptop that was plugged into an outlet but only using a battery would consume about 22 watts per hour.


So, how many watts does a laptop use? 25.5 watts on average per hour when used with an AC adapter, but this figure varies depending on the battery type and model of the laptop.

Hope this helps! Thanks for reading!

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