The truth is that you may find yourself in the need to know how many pixels in an inch there are and you just don’t seem to know how to answer it.
While there are many reasons why you need to know how many pixels in an inch there are, one of the most common tends to be related to the way an image looks on a screen different from the one you are using.
When you are trying to discover how many pixels in an inch there are, one of the measurements that you need to use is the PPI which stands for pixels per inch.
Check out our inches to pixels converter.
Simply put, the PPI of your screen, which is also often referred to as pixel density, is the number of pixels that you have, both vertical and horizontally, in one single inch of your screen.
So, how many pixels in an inch are there?
The truth is that there is no answer to this question. Better said, there are multiple answers and they can all be true depending on your screen.
The reality is that pixels don’t all have the same size; it varies. So, you just can’t say that 1 inch has xx pixels as you can say that 1 inch is the same as 2.54 centimeters.
So how can you know?
The only thing that you need to have in mind is that pixels have different sizes depending on the screen that you are using. Let’s say that you wanted to know the PPI of your 75 inches 4K TV. In this case, we could say that the answer is 58.74 pixels. However, if you wanted to know the pixels per inch of your 5” full HD smartphone screen, this would be 440.58 pixels.
Summing all up, we can say that how many pixels in an inch depend on the resolution of the screen as well as on the size of the screen.
Discover how you can simply convert pixels to inches.
Easy Way To Calculate How Many Pixels In An Inch:
In order to determine how many pixels in an inch, you need to know the resolution of your screen as well as the diagonal screen size of the screen. The truth is that all manuals come with this information. So, you won’t have any problems discovering it.
Here’s how you can determine how many pixels in an inch manually:
PPI = (√(w²+h²))/d,
where
- PPI – pixels per inch
- w – width resolution (in pixels)
- h – height resolution (in pixels)
- d – diagonal size of the screen (in inches)
The truth is that this formula seems to be a lot more complicated than it really is. So, let’s just consider a simple example so that you can fully understand how you can determine how many pixels in an inch.
Let’s say that you want to know how many pixels in an inch there are for the television you just bought – a 60” 4K TV with a resolution of 3840 X 2160.
In order to make things easier, we will calculate each one of the variables that we already know first and we will then add them all to the formula we showed you above.
1. Determining the width: w² = 3840² = 14,745,600
2. Determining the height: h² = 2160² = 4,665,600
3. Replacing all the variables in the math formula:
PPI = (√(14,745,600+4,665,600))/60
PPI = √19,411,200 / 60
PPI = 4,405,814 / 60
PPI = 73.43
As you can see, it was extremely easy to determine the pixels per inch of a 60” 4K TV with a resolution of 3840 X 2160. In case you need to calculate the number of pixels per inch of your screen, you just need to replace your own numbers.
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