How to: Pixels to Centimeters
A pixel is the smallest element of a digital image. Every image consists of a large number of pixels. Dots per inch refers to the image's printed resolution and reflects the number of dots per a linear inch. When printing an image you may need to estimate the printing size using the number of pixels in the digital image. To convert pixels to centimeters you need to know the image resolution.
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Instructions
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Right-click on the image file in Windows Explorer.
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Click on "Properties" and select the tab "Details."
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Read the image resolution given in dpi units; for example, the image resolution is 400 dpi.
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Divide pixels by dpi to calculate the respective length in inches. For example, 800 pixels correspond to 800 / 400 = 2 inches.
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Multiply the length in inches by 2.54 to convert it to centimeters. In this example, the length is 2 x 2.54 = 5.08 centimeters.
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