Calculate pixels per square foot from PPI, pixel pitch, or LED wall size, and estimate resolution, total pixels, and density in px/sq ft or px/sq m.

Assumes equal horizontal and vertical pixel spacing on a square grid. Wall resolution is a rounded estimate; actual LED panels must match the manufacturerโ€™s module layout.

Pixels Per Square Foot Formula

For a square grid with equal horizontal and vertical pixel spacing, the following formula converts linear pixels per inch to pixels per square foot.

Psf = (Pโ‚šแตข)ยฒ ร— (If)ยฒ

Variables:

  • Psf is the pixels per square foot
  • Ppi is the pixels per inch
  • If is the inches per foot (exactly 12 inches)

To calculate the pixels per square foot, square the number of pixels per inch and multiply by the square of the number of inches per foot.

What is Pixels Per Square Foot?

Pixels per square foot is a measure of the physical pixel density of a display or image in terms of the number of pixels contained within a square-foot area. This metric is particularly useful in fields such as digital signage, printing, and display manufacturing, where understanding the pixel density over a given area is crucial for ensuring image clarity and quality. Higher pixels per square foot indicate a higher resolution and finer detail in the displayed image.

How to Calculate Pixels Per Square Foot?

The following steps outline how to calculate the Pixels Per Square Foot.

  1. First, determine the number of pixels per inch (Ppi).
  2. Next, determine the number of inches per foot (If), which is exactly 12 inches.
  3. Next, calculate the pixels per square foot using the formula Psf = (Ppi)ยฒ * (If)ยฒ.
  4. Finally, calculate the Pixels Per Square Foot.
  5. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Pixels Per Inch (Ppi) = 100

Inches Per Foot (If) = 12