Machine Vision & Industrial Inspection AI calculator

Camera Resolution Calculator

Inspection resolution, measured in mm per pixel, tells you the real-world size each pixel represents at the inspection distance. A lower mm per pixel value means higher resolution and the ability to detect smaller defects. Enter the horizontal field of view (calculated from sensor width, focal length, and working distance) and the camera horizontal pixel count to find the inspection resolution. Compare this to your minimum detectable defect requirement to confirm the camera specification.

What this calculator does

  • Calculate inspection resolution (mm per pixel) for a machine vision camera by dividing the horizontal field of view by the camera horizontal pixel count, so you can confirm whether the camera has enough resolution to meet your inspection specification.
  • Use it when specifying a machine vision system and you need to confirm that the chosen camera and lens combination gives enough mm per pixel resolution to reliably detect the smallest defect in your inspection specification.
  • Turns horizontal field of view (fov width), camera horizontal pixel count, unit conversion factor into a ratio for camera resolution in machine vision and industrial inspection ai.

Formula used

  • Inspection resolution = FOV width / horizontal pixel count x conversion factor
  • Example: 220 mm / 2448 pixels x 1 = 0.090 mm per pixel

Inputs explained

  • Horizontal field of view (FOV width): Enter the horizontal FOV in mm calculated from sensor width, focal length, and working distance. Use the Field of View calculator to find this value.
  • Camera horizontal pixel count: Enter the horizontal pixel count from the camera specification. For a 5 MP camera (2448 x 2048), enter 2448. For a 2 MP camera (1920 x 1080), enter 1920.
  • Unit conversion factor: Leave at 1 for mm per pixel result. Enter 25.4 to convert from mm per pixel to pixels per inch for tolerances specified in inches.

How to use the result

  • Use it when camera resolution in machine vision and industrial inspection ai is being normalized for comparison.
  • Ratios hide absolute change; pair with the underlying counts when you present.

Common questions

  • What does the camera resolution calculator give me? Calculate inspection resolution (mm per pixel) for a machine vision camera by dividing the horizontal field of view by the camera horizontal pixel count, so you can confirm whether the camera has enough resolution to meet your inspection specification. You get a ratio you can defend before quoting, scheduling, or sign-off.
  • Which assumptions drive the ratio? horizontal field of view (fov width), camera horizontal pixel count, unit conversion factor usually move the ratio most. Pull from measured machine vision and industrial inspection ai runs, supplier data, and recent quotes rather than memory.
  • How should I act on the output? Use the ratio in machine vision and industrial inspection ai reporting or as a normalized score against another period.
  • What can throw the result off? Confirm both inputs are from the same time window and scope before you trust the ratio.

Last reviewed 2026-05-12.