How to convert pixels to inches
To convert pixels to inches, you have to divide pixels by resolution. For example, a 600 x 400 pixels image displayed on a 96 DPI screen is going to have 6.25 x 4.17 inches when printed.
To find the resolution of an image in DPI, you need to know the image width in both pixels and inches, then divide the image width in pixels by the image width in inches. For example, a 600 pixels wide image that’s also 6.25 inches wide, has a resolution of 96 DPI.
To print an image at some specific dimensions, you can check the DPI of your screen by consulting the manufacturer specs. Alternatively, you can use our handy-dandy method explained below.
Use the chart on the right for standard pixels to inches conversions, or the conversion calculator below.
How to find DPI of your screen?
The easiest way to find your display DPI is to take a ruler or a measuring tape to measure the red portion of the screen from the right. Go to size chart below to find DPI resolution of your display. The most common value is 75 DPI for most of monitors.
Uncommon measurement? Calculate DPI below.
| Measurement | Screen DPI |
| 3 inches | 100 DPI |
| 3 ¼ inches | 92 DPI |
| 3 ½ inches | 85 DPI |
| 3 ¾ inches | 80 DPI |
| 4 inches | 75 DPI |
| 4 ¼ inches | 70 DPI |
| 4 ½ inches | 66 DPI |
| 4 ¾ inches | 63 DPI |
| 5 inches | 60 DPI |
What is a pixel, what is an inch?
Pixel definition provided by Dictionary.com
A pixel is the smallest element of an image that can be individually processed in a video display system.
Inch definition provided by Dictionary.com
An inch is a unit of length, 1/12 (0.0833) foot, equivalent to 2.54 centimeters.
When you have to convert pixels to inches?
Usually, converting pixels to inches is a good way to see how your images will look to a different screen or projector. If you have a presentation, and you want to add some images in that presentation, you may want to see how this image will show on the projector that you will use. Knowing the width and height of the image (in pixels) that we will use in the presentation, we can calculate the image width and height in inches, to make an idea how it will be displayed on the projector or another display, bigger or smaller.
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The website doesn’t allow for my screen resolution that is 20 dpi. It is not an option on the dropdown list.
Hi Yoshi. There’s a checkbox on the right side of the calculator that says “Activate custom DPI”. Check that box and enter your DPI value. 20 DPI in your case.
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for my blog The Ravi Report for my Daniel Jacobs interview and it was very helpful.
Will continue to use and spread the word! Thank you!
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The grids in Excel Read 8.09 and 98 pixels
How can I calculate adjusting the Column spaced to inches to so I then type in label information and then print the Avery
Labels ok them on the HP Ink jet Printer
I have package Avery pre glued 2-3/4 x 1″ Avery labels 33 to a page but no template
Can you help bye converting pixels to inches ? Thank you
Hi Jeanne,
First off you need to know your printer DPI. Most printers have 300 DPI. If that’s the case, you can use Inches to Pixels conversion tool, select 300DPI and convert your sizes to pixels.
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I used it to successfully convert a wiring diagram to print out on an 8½ x 11 sheet of typing paper.
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I want to draw an image of size 9x7cm on samsung LED pc monitor, whose resolution is set to 1920×1080. Pc monitor size is diagonally 21.5 inch.
I want to calculate as how many pixels is needed to draw that image.
Also I mean that image size is in cm, i need to mention that size in pixels
Can anyone help ?
Thanks in advance.
Thrushitha
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Hi Thrushitha,
First you need to find out your monitor DPI, either by using DPI Finder from above, or looking into your pc settings.
Then you can convert Inches to Centimeters to match your requirements.
As an example, if your monitor has 60 DPI, then your sizes in pixels will be approximately: 213×165 px.
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If i go through an expression (which i found on some discussion forum) , i get 102 as dpi. But if i go through this site in measuring red bar i found 3.6inch = 83 dpi.
Expression what i followed is
Resolution set = 1920 * 1080
= 16 : 9
we have width = 16x and height = 9x
Screen measurement along diagonal = 21.5 inches
Therefore, we have (16x * 16x) + (9x * 9x) = 21.5 * 21.5
337x^2 = 462.25
x^2 = 1.37166
Therefore x = 1.17118
Hence width =16x = 18.7389
height = 9x = 10.5406
Therefore Area = width * height
area = 197.5192878
PPI = Sqrt of ((1920*1080)/(area))
= 102 pixels
I found this expression in one of the sites when they are speaking about DPI calculation
Can you please suggest me, which value is right
Hi Thrushitha,
I don’t really understand what you want to accomplish…
You want to draw an image of 9x7cm that will be displayed on your monitor, or that size should be when printed?
If you draw the picture at 9x7cm on your screen, then display it on a projector or another display, the sizes will change, because the other devices might not have the same DPI as the monitor you’re working on.
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I am sorry for confusing you. First i need to know what is the dpi of my monitor. (Samsung LED monitor, model : S22F355FHW). Then after knowing it i want to know how many pixels are used to draw an image say 9 x 7 cm.
If i know what is dpi, then it ll be easy to caluculate number pixels for my respective images
To know DPI, one method was to use that RED BAR in this website and another was by using expression.
By red bar, i measured red bar using scale which resulted in 3.6inch = 83 dpi.
By using expression, (explained in earlier chat), i got 102 dpi.
I want to know which is right.
The formula is correct. I tested it with two monitors and a mobile phone display, and it gives me the exact result as when using the measurements of the red bar.
Are you sure you have the measured the red bar correctly in inches? For a DPI of 102, it should have between 2.92 and 2.94 inches.
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on led monitor with 1920 x 1080 resolution set.
Honestly I don’t know. Something is not right… Can you check your resolution using a tool like this one? https://www.whatismyscreenresolution.com/
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I went through that link and found my monitor resolution is 1536 x 864. when I use this value in my expression, i find PPI = 82 , which is almost equivalent to this red bar calculation 83.
In my system configuration, it is showing resolution as 1920x 1080 at 125%.
but with 100%, that link shows 1920 x 1080 and red bar measures about 2.9 inch thats equal to 103 dpi. whixh is equal to my expression calculation also. now i got clear idea about ppi and resolution.
U helped me a lot.
Thanks a ton sir
No problem. Glad I could help, and you solved your problem.
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The DPI varies from one device to another, so that’s why you’re getting different results.
Also, you should calculate based on the output device DPI (in this case, the printer).
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I don’t see dpi on my resizing, just % and pixels. Usually, submissions are supposed to be at 1920 pixels minimum, but that makes my image HUGE according to this converter. Under properties on my photo, it does show it set at 300dpi, but of course I don’t know how to change that, or if it matters, since the image will be viewed on the judges computer. Can anyone help me using very simple terms?
Hi Coleen,
According to Inches to Pixels converter, your image should have 450px on the longest side.
The process I followed: Selected 75 DPI from the dropdown menu, entered 4 in the Inches box and the calculator showed me 450px as the result.
You can use an app like Gimp to change the photo resolution to 72. See here how to do it: http://cdn.makeuseof.com/wp-content/uploads/2015/10/gimp-change-dpi.gif
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If it’s an image, you can try a lossless compresion tool like ImageOptim or JPEGmini.
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Your website is really helpfull.
But please can you please tell me the formula of how you calculate dpi
Hi Fahim, glad you enjoy it.
About your question..
The formula to calculate pixels into inches is: Pixels / DPI = Inches
From this formula we can extract DPI as: DPI = Pixels / Inches
Hope it helps. If you have further questions, I’m here.
Have a nice day,
Jeffrey
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I can easily convert my JPEG image (that average 5+ MB File size) to a TIFF image, with an average of 15+ MB File size, but how do you size the picture to a print size of 8″ x 10″, and at 300 DPI?
Hi Michael,
I don’t understand what do you want to accomplish.
You can resize the picture using a photo editing app like Adobe Photoshop or if you’re on a Mac we have an article on our blog about resizing photos on Mac OS X with three default apps https://www.ninjaunits.com/blog/resize-images-mac/
Hope it helps,
Jeffrey
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I checked my Photoshop install and you cannot change to inches. You can at most to change to millimeters.
Photoshop menu > Preferences > Units & Rulers > Change to Millimeters.
You could use an online tool to convert millimeters to inches I think.
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tell me what my DPI is ? It must be more than 100.
Thanks
Hi Nagaraj.
If I’m right, 2 7/8” should be 2.88 inches in decimals. In this case, your DPI is 104.
You could use the DPI calculator from the left of the table for uncommon measurements like this one.
Hope it helps.
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Hi Beverly,
We could try. Can you provide me the DPI of your screen and the measurement in pixels from your photo?
Thank you!
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I got 2 inches exactly for my measurement of the area.
Any help would be appreciated! Thank you for this converter
Hi Shantal,
Your DPI value is 150.
Stay tuned, I will release the new version of the converter soon and you will have the option to calculate the DPI value by yourself.
Have a fantastic year,
Jeffrey!
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Glad it helped you Nora. You can make some experiments with DPI table even on mobile devices
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That’s a very interesting approach Todd. Glad it was useful. For my curiosity, what was your banner size?
It has 235×40 inches, and I had to make it in PhotoShop at 14.100×2.400px. That was a complete challenge for my laptop.
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Hi Joann,
Your DPI is 114.
For the moment the converter doesn’t know how to convert any other DPI’s than the preset ones. I will update the converter soon, and you should be able to calculate the DPI value by yourself and type other DPI values to convert your dimensions into inches.
Tell me your values in pixels and I’ll do the conversion for you.
Thank you for your feedback,
Jeffrey
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Glad that helped you Jack. To make it easier you could use the formula in excel to automate the process. The formula for the conversion is: Pixels / DPI = Inches
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Hi Ted,
Theoretically, you can. Just be sure you have specified the correct DPI.
Could you share a pic of your project? It sounds very interesting.
Have a nice day,
Jeffrey