Free length calculator
Millimeters to Pixels Converter (mm to px)
Enter a value to convert millimeters to pixels. Results update as you type and include the calculation steps.
mm
DPI
Result
Enter a value above
In decimal inches
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As a common fraction
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Feet and inches
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Millimeters to pixels formula
Pixels depend on the resolution. Use pixels = millimeters x DPI / 25.4.
At 96 DPI, 10 mm is approximately 37.795 pixels. At 300 DPI, the same 10 mm is approximately 118.11 pixels.
About the units
Millimeter
A millimeter is one thousandth of a meter, one tenth of a centimeter, and exactly 1/25.4 of an inch.
Pixel
A CSS pixel is a digital length unit. Converting a physical millimeter measurement to pixels requires a DPI or PPI value.