Use this cinematography or projection calculation to plan image geometry, exposure, timing, storage, film footage, or presentation from explicitly stated camera and display parameters.

Pixels Across (px)

Required number input.

Dimension Inches (in)

Required number input.

Pixel density from pixel count across a display dimension divided by that dimension in inches. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Pixels Per Inch (ppi)

The resulting pixels per inch returned as a number.

• Real results depend on lens design, sensor or film dimensions, focus criteria, transmission, exposure calibration, codec settings, color pipeline, projector setup, screen, viewing environment, and manufacturer conventions. Nominal specifications and simplified formulas may not match measured performance.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Confirm critical values with the actual camera, lens, codec, projector, and delivery specification, then run a camera or projection test under representative conditions.

• Aspect Ratio From Resolution

  Display width-to-height aspect ratio from integer pixel dimensions; does not simplify to a fraction.

• Color Depth Bits Per Pixel

  Nominal uncompressed bits per pixel from equal bit depth per channel times sampled channel count.

• Pixel Count Total

  Total image pixels from integer width and height; rejects products above JavaScript's exact safe-integer range.