By doing this, the image pixel dimensions will automatically be displayed. When you already have your desired pixel density entered in the calculator, you can either select a standard print size or input your preferred print dimensions. However, if you have a specific pixel density to investigate on, you can also just input the pixel density for custom calculations. In our pixel to print size calculator, selecting the viewing distance will display the recommended pixel density for that distance.
Megapixel to resolution calculator how to#
You can also learn how to calculate the size of an image file with our image file size calculator. We can also express these values in camera megapixels by multiplying them together to come up with 283,500 pixels or 0.28 megapixels, which we can usually see in our camera settings. By multiplying 180 PPI by the print dimensions of a 2R photo paper, which is 2.5" x 3.5", we get our required image dimensions in pixels of 450 pixels x 630 pixels. Let's say we want to print our pictures on sheets of 2R wallet-sized photo paper.įor this print, we can go for the 180 PPI pixel density. If you like taking pictures and plan to have them printed right away and you need to save some storage space, you can use the equations above to know the minimum camera resolution you need for your desired print size. Image height in pixels = picture height * pixel density Image width in pixels = picture width * pixel density On the other hand, to calculate the required image file dimensions (in pixels) for a standard photo size or a specific print size at a desired pixel density, we just have to multiply the print width and print height by the pixel density, separately, as shown in the equations below: Print height = 4800 pixels / 300 pixels per inchįrom the computation above, we can now say that we can print the said image file up to a print size of 12" x 18" without compromising the image quality. This is a chart for the common results of conversion dpi to megapixels at 3:2 aspect ratio and 24 inches diagonal length.Print height = image height in pixels / pixel density The best way to convert dpi to megapixels is using the above online converter because it is fast and easy to use.
Megapixels (MP) = Height (pixels) * Width (pixels) Width (pixels) = Diagonal length (pixels)/√((1/Aspect ratio²)+1)įinally, calculate the megapixels value using the following formula: Thirdly, calculate the width in pixels using the following formula: Height (pixels) = Diagonal length (pixels)/√(Aspect ratio²+1) Secondly, calculate height in pixels using the following formula: To manually convert dpi to megapixels, you need the following formulas:įirst, calculate diagonal length in pixels using this formula:ĭiagonal length (pixels) = DPI * diagonal length (inches) To convert dpi to megapixels, you can use the above online converter for fast and one-click conversion, or you can use the dpi to megapixels conversion formula to manually calculate the result. Second, enter the diagonal length in inchesįinally, click on the convert button, that’s all! Video Tutorial: How To Use DPI To Megapixels Converter How to use dpi to megapixels converterįirst, enter the dpi value which you want to convert to megapixels A megapixel (MP) contains 1,000,000 pixels, and the number of megapixels offered by a camera system is the amount of information it can transfer into a digital photo or video. The smallest part of a digital image, a pixel, is a square or non-square image element, like a piece of a puzzle. Such a measure is used to know the resolution of flat media The measure of the resolution of a monitor, printer, scanner, and other devices is determined by the number of DPI dots per inch. DPI is an abbreviation for “Dots Per Inch” and stands for the number of dots (pixels) per inch (image resolution).
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