What is the Focal Length Calculator?

The Focal Length Calculator allows you to determine the focal length of a lens or mirror using the object distance and image distance. By entering these values, the calculator applies the lens/mirror formula 1f=1v+1u\frac{1}{f} = \frac{1}{v} + \frac{1}{u}f1​=v1​+u1​ to compute the focal length. This tool helps students, optics enthusiasts, and engineers quickly analyze optical systems without manual calculations.

How to Use:

1. Enter Object Distance (u): Input the distance from the object to the lens/mirror in meters.
2. Enter Image Distance (v): Input the distance from the image to the lens/mirror in meters.
3. Click “Calculate”: The calculator computes the focal length in meters.
4. Review the Result: Use this value to analyze lens/mirror systems, solve optics problems, or design optical experiments.