Smartphone Projector Calculator: Your DIY Guide to Screen Size

Calculate Your DIY Projector's Estimated Screen Size

Enter your phone's display size (e.g., 6.1 inches for an iPhone 15).
x
The magnification power of your chosen lens (e.g., 2x, 3.5x).
Plan your DIY smartphone projector with our easy calculator. Determine your estimated projection screen size based on your phone's display and lens magnification. Get started building your budget-friendly home cinema today!

Formula:

The estimated projection screen diagonal is calculated by multiplying your smartphone's screen diagonal by the lens magnification factor.

Formula: P = S × M

  • P = Estimated Projection Screen Diagonal (in/cm)
  • S = Smartphone Screen Diagonal (in/cm)
  • M = Lens Magnification Factor (e.g., 2 for 2x, 3 for 3x)

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