PX to MM Converter

PX to MM Converter – Free Pixel to Millimeter Conversion Tool

📐 PX to MM Converter

Convert digital pixels to physical millimeters for print design

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Digital to Physical Conversion

Master the conversion from digital pixels to physical millimeters!

PX to MM conversion is essential for translating digital measurements to physical dimensions. Pixels (PX) are the standard unit for digital displays, while millimeters (MM) are the fundamental unit for physical measurements, making this conversion crucial for digital-to-physical workflows and cross-platform consistency.

Why convert PX to MM? While PX units work perfectly for digital interfaces, MM units are essential for physical dimensions and manufacturing. Converting between these units ensures your digital designs translate accurately to physical objects and maintains measurement consistency across different media.

Key Benefits of Converting PX to MM:

  • Digital to Physical Translation: Convert screen designs to physical dimensions
  • Manufacturing Preparation: Prepare digital assets for physical production
  • Cross-Platform Consistency: Ensure measurements work across digital and physical media
  • Quality Control: Verify digital designs against physical specifications
  • Prototyping Support: Bridge the gap between digital design and physical prototyping

How to Convert PX to MM

The conversion formula depends on DPI: Multiply the pixel value by 25.4 and divide by the DPI setting.

Conversion Formula:

MM = (PX × 25.4) ÷ DPI

Example (96 DPI): (38px × 25.4) ÷ 96 = 10mm

Example (72 DPI): (28px × 25.4) ÷ 72 = 10mm

Example (150 DPI): (59px × 25.4) ÷ 150 = 10mm

Step-by-Step Conversion Process:

  1. Set DPI: Choose appropriate DPI for your target output medium
  2. Multiply by 25.4: Convert pixels to millimeter equivalents per inch
  3. Divide by DPI: Convert to final millimeter value
  4. Round Appropriately: Apply rounding based on measurement precision needs
  5. Verify Output: Test measurements in target physical medium

Common PX to MM Conversion Values

Here are the most commonly used PX to MM conversions for digital to physical design. These values represent standard pixel dimensions used across different DPI settings and help maintain measurement consistency when moving from digital to physical.

Measurement Scale – PX to MM:

PX Value MM (96 DPI) MM (72 DPI) MM (150 DPI) MM (300 DPI) Common Use
4px 1.06mm 1.41mm 0.68mm 0.34mm Very thin lines, hairlines
8px 2.12mm 2.83mm 1.35mm 0.68mm Thin borders, small details
12px 3.18mm 4.24mm 2.03mm 1.02mm Standard borders, thin elements
16px 4.23mm 5.65mm 2.71mm 1.35mm Text baselines, small elements
20px 5.29mm 7.06mm 3.39mm 1.69mm Small buttons, icon spacing
24px 6.35mm 8.47mm 4.06mm 2.03mm Standard buttons, touch targets
32px 8.47mm 11.30mm 5.42mm 2.71mm Large buttons, card elements
36px 9.53mm 12.70mm 6.10mm 3.05mm Medium cards, component spacing
40px 10.58mm 14.11mm 6.78mm 3.39mm Standard cards, large elements
44px 11.64mm 15.52mm 7.45mm 3.72mm Accessibility minimums, touch targets
48px 12.70mm 16.93mm 8.13mm 4.06mm Hero sections, banners
56px 14.81mm 19.75mm 9.47mm 4.74mm Large banners, display elements
64px 16.93mm 22.58mm 10.83mm 5.42mm Page sections, large displays
72px 19.05mm 25.40mm 12.20mm 6.10mm Full-width elements, major sections
80px 21.17mm 28.22mm 13.56mm 6.78mm Large sections, full-width content
96px 25.40mm 33.87mm 16.27mm 8.13mm Major layout elements, full sections

PX vs MM – Understanding Measurement Units

PX vs MM serve different purposes in design and manufacturing. Understanding when to use each is crucial for effective cross-platform design workflows.

When to Use PX Values:

  • Web Design: Digital interfaces and responsive websites
  • Mobile Apps: iOS, Android, and cross-platform applications
  • Digital Displays: Monitors, TVs, and digital signage
  • UI/UX Design: Interface design and user experience
  • Digital Assets: Icons, graphics, and screen-based content

When to Use MM Values:

  • Print Design: Physical documents and printed materials
  • Physical Measurements: Real-world objects and prototypes
  • Manufacturing: Product design and specifications
  • Architecture: Building plans and technical drawings
  • Traditional Publishing: Books, magazines, and print media

Best Practices for PX to MM Conversion:

🎯 Match Target Medium

Select DPI that matches your target output.

Print: 300 DPI • Web: 96 DPI • Screen: 72 DPI

📐 Consider Physical Constraints

Account for manufacturing and material limitations.

Minimum cut sizes • Material thickness

🎨 Plan for Scale

Consider how digital elements translate to physical scale.

📱 Test Physical Output

Verify measurements with physical prototypes.

Author

  • Manish Kumar

    Manish holds a B.Tech in Electrical and Electronics Engineering (EEE) and an M.Tech in Power Systems, with over 10 years of experience in Metro Rail Systems, specializing in advanced rail infrastructure. He is also a NASM-certified fitness and nutrition coach with more than a decade of experience in weightlifting and fat loss coaching. With expertise in gym-based training, lifting techniques, and biomechanics, Manish combines his technical mindset with his passion for fitness.

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