Pixel to mm

Pixel to MM Conversion: Understanding the Basics

In digital photography and design, the size of an image on a printed page depends not only on its pixel dimensions but also on its resolution (measured as pixels per inch or PPI). The relationships are as follows:

1. Convert Pixels to Millimeters: Since 1 inch equals 25.4 millimeters, the formula for converting pixels (px) to millimeters (mm) at a given resolution (PPI) is:

For example, if you have an image that is 300 px wide at 96 PPI, then:

2. Convert Millimeters to Pixels: Conversely, to convert mm to pixels, use:

For example, to convert 210 mm to pixels at 300 PPI:

Using these formulas, you can accurately resize images for print and digital use. Whether you need a photo pixel to mm converter or a detailed mm to pixel calculator, understanding these key relationships is essential.

Real-World Examples

• 1 Pixel to MM: At 300 PPI:

• 210 mm to Pixels: At 300 PPI,

• 420 mm to Pixels: At 300 PPI,

• 51 mm x 51 mm to Pixels: For each side at 300 PPI,