1.3 Inch Display to MM: Accurate Conversion, Specifications & OPL’s Solutions

 

When selecting a display for devices like smart wearables, medical monitors, or industrial controllers, understanding size units is critical. Most display manufacturers use inches to label screen sizes, but many global projects require metric units (millimeters, mm). This guide focuses on 1.3 inch display to mm conversion, explains key specifications, and introduces OPL’s reliable 1.3-inch display solutions.

 

1. Why Display Size Conversion Matters: Inches vs. MM

 

Display size is always measured by the diagonal length of the screen (excluding bezels)—this is an industry-wide standard. Inches are common in North American and European markets, while mm is preferred in Asia, automotive, and medical industries. For engineers, buyers, or product designers, converting 1.3 inches to mm ensures proper device fitting, component compatibility, and compliance with regional design standards.

 

2. Step-by-Step: 1.3 Inch Display to MM Conversion

 

The conversion formula between inches and mm is fixed:

1 inch = 25.4 millimeters

To calculate a 1.3-inch display’s diagonal in mm:

1.3 inches × 25.4 mm/inch = 33.02 mm

This means a 1.3-inch display has a diagonal length of approximately 33 mm (rounded to a practical value for engineering use).

 

3. Key Specifications of 1.3-Inch Displays (Beyond Diagonal MM)

 

While diagonal size (33.02 mm) is the starting point, other specs affect performance. Here are common parameters for 1.3-inch displays (consistent with OPL’s product lineup):

Specification Typical Range for 1.3-Inch Displays OPL’s Popular Options
Aspect Ratio 1:1 (square), 4:3, 16:9 1:1 (smart watches), 4:3 (medical)
Resolution 240×240, 320×320, 400×400 pixels 320×320 (high clarity)
Display Technology OLED, TFT-LCD, E-Ink OLED (high contrast), TFT-LCD (low power)
Active Area (W×H) ~23×23 mm (1:1), ~26×19 mm (4:3) 23.2×23.2 mm (1:1), 26.4×19.8 mm (4:3)
Brightness 200–500 nits (indoor/outdoor use) 350 nits (sunlight readable)
Note: Active area (actual screen space) varies by aspect ratio—OPL provides detailed dimension drawings for each model to simplify device integration.
 

4. OPL’s 1.3-Inch Display Solutions: Reliable for Diverse Industries

 

OPL (a trusted display manufacturer with 10+ years of experience) offers 1.3-inch displays tailored to different use cases. Our products prioritize durability, consistency, and easy integration—ideal for:

  • Smart Wearables: Low-power OLED 1.3-inch displays (320×320 resolution) with 33.02 mm diagonal, perfect for fitness trackers and smart watches.
  • Medical Devices: High-brightness TFT-LCD 1.3-inch displays (4:3 aspect ratio) with anti-glare coating, meeting medical-grade visibility requirements.
  • Industrial Controls: Rugged 1.3-inch displays (wide temperature range: -20°C to 70°C) that withstand harsh factory environments.
All OPL 1.3-inch displays include:
  • Pre-calibrated color accuracy (for OLED models)
  • Standard interfaces (SPI, I2C) for quick integration
  • RoHS and CE certifications (compliant with global standards)
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5. Contact OPL for 1.3-Inch Display Quotes or Technical Support

 

If you need a 1.3-inch display (with 33.02 mm diagonal or custom dimensions), OPL’s team can provide samples, technical specs, or customized solutions.

Final Note

 

Converting 1.3 inches to mm (33.02 mm) is straightforward, but choosing the right display requires matching specs to your device’s needs. OPL’s 1.3-inch displays balance performance and cost, making them a top choice for global clients. For more details, visit our website or contact our support team today.