Convert pixels to millimeters and millimeters to pixels with custom PPI. Ideal for web, UI, and print design.
Formula: (px ÷ PPI) × 25.4
Formula: (mm ÷ 25.4) × PPI
| Pixels (px) | Millimeters (mm) |
|---|---|
| 16 px | 4.23 mm |
| 24 px | 6.35 mm |
| 96 px | 25.40 mm (1 inch) |
| 150 px | 39.69 mm |
| 300 px | 79.38 mm |
Note: pixel-to-millimeter values always depend on the PPI (pixels per inch). For most web layouts, 96 PPI is used as the reference.
Common PX to MM sizes at 96 PPI…
1 px in mm is 0.26 mm
2 pixels to mm is 0.53 mm
4 px to millimeters is 1.06 mm
5 pixels in mm is 1.32 mm
8 px to mm is 2.12 mm
10 pixels to mm is 2.65 mm
12 px into millimeters is 3.17 mm
15 pixels to mm is 3.97 mm
Common PX MM sizes at 96 PPI…
20 px to mm is 5.29 mm
25 pixels to millimeters is 6.61 mm
30 px in mm is 7.94 mm
35 pixels to mm is 9.26 mm
40 px to millimeters is 10.58 mm
50 pixels in mm is 13.23 mm
60 px in mm is 15.87 mm
70 pixels to mm is 18.52 mm
Common PX to MM sizes at 96 PPI…
80 px to mm is 21.17 mm
90 pixels to mm is 23.82 mm
96 px to mm is 25.39 mm
100 pixels to mm is 26.46 mm
120 px in mm is 31.75 mm
140 pixels to mm is 37.04 mm
150 px to millimeters is 39.69 mm
160 pixels to mm is 42.33 mm
Common Pixel to MM sizes at 96 PPI…
180 px to mm is 47.62 mm
200 pixels to mm is 52.92 mm
220 px to mm is 58.21 mm
250 pixels in mm is 66.15 mm
300 px to mm is 79.37 mm
350 pixels to mm is 92.61 mm
400 px to mm is 105.83 mm
500 pixels to mm is 132.29 mm
Here are some of the frequently asked questions about conversions…
If you work with CSS, responsive layouts, or UI design, these converters will help you switch between different units quickly.
Each tool solves a specific use case – whether you're adjusting font sizes, spacing, or converting print measurements to screen pixels. Explore the full set below to speed up your workflow…
PX to CM Converter – Convert pixels into centimeters for print-friendly layouts and accurate sizing.
CM to PX Converter – Convert centimeters to pixels when designing for screens or digital assets.
PX to REM Converter – Convert pixels to rem for scalable and accessible typography.
REM to PX Converter – Convert rem values back to fixed pixel units for precise layout control.
PX to Inches Converter – Convert pixels into inches for print sizes or physical measurements.
Inches to PX Converter – Convert inches into pixel dimensions based on standard screen density.
MM to PX Converter – Convert millimeters to pixels for UI, print, and product mockups.
PX to MM Converter – Convert pixels to millimeters with accurate unit mapping.
MM to Inches Converter – Convert millimeters into inch values for sizing and print design.
Inches to MM Converter – Convert inches into millimeters for exact physical measurements.
VW to PX Converter – Convert viewport-width units into pixel values for responsive layouts.
PX to VW Converter – Convert pixel values into viewport-width units for fluid UI scaling.
The PX to MM Converter is more than just a calculator — it’s a design bridge between pixels and paper. Whether you’re preparing web assets for print or aligning digital and physical dimensions, this tool ensures every pixel translates perfectly into the real world.
As an agency founder, I believe precision is what separates good design from great design. With this converter, our team — and now yours — can achieve that precision effortlessly.
Bookmark this page, share it with your team, and explore our other design tools to make your workflow faster, smarter, and error-free.
Cheers,
Kuldeep