Calculate the field of view and minimum detectable size of your thermal imaging camera based on distance, resolution, and optics.
IFOV (Instantaneous Field of View) and MFOV (Measurement Field of View) are two key parameters for determining whether a thermal imaging camera is suitable for a specific inspection.
With this calculator, you can quickly and easily estimate:
- The minimum detectable size of an object as a function of distance
- The camera's horizontal and vertical field of view
- Actual thermal measurement capability based on resolution and optics
- Whether the selected camera is suitable for electrical inspection, industrial inspection, or predictive maintenance.
Enter the data manually or select a camera model to automatically retrieve the IFOV, 3×3 MFOV, and 5×5 MFOV values :
Name Camera
FOV [°]
FOV [°]
Horizontal pixel count [px]
Vertical pixel count [px]
Distance [m]
| HFOV | 0.00 | [m] |
| VFOV | 0.00 | [m] |
| IFOV | 0.00 | [mm] |
| MFOV3x3 | 0.00 | [mm] |
| MFOV5x5 | 0.00 | [mm] |
| Legend | |
| D | Target distance in meters |
| HFOV | Horizontal field of view in meters |
| VFOV | Vertical field of view in meters |
| IFOV | Instantaneous field of view in millimeters |
| MFOV3x3 | Minimum object size in millimeters matrix 3x3 pixels |
| MFOV5x5 | Minimum object size in millimeters matrix 5x5 pixels |
