Focal Length Calculator

Use this tool to calculate the Focal Length required for a specified Field of View and Distance.
Enter the camera sensor size, either the Horizontal or Vertical Field of View desired, and the
Distance to the object, then click Calculate.

Sensor Size
Horizontal FoV (mm)  The horizontal length you want imaged.
OR
Vertical FoV (mm)  The vertical length you want imaged.
Distance to Object (mm)  The distance from the object to the camera.

Sensor Size and Dimensions


Field of View & Focal Length Diagram