Calculate where an image forms given the object distance and focal length of a lens or mirror. Determines whether the resulting image is real or virtual.
Enter your values below
Distance from the optical element to the object.
Positive for converging lens/mirror, negative for diverging.
How this calculator works
Rearranged lens/mirror equation solved for image distance v. Positive v indicates a real image on the opposite side of the lens/mirror.
Common questions about this calculator
These calculators are for educational and informational purposes only. While we strive for accuracy, results should be verified for critical applications. Always consult authoritative sources for engineering or scientific work.
