# Focal Length

- Focal Length of a Spherical Mirror - Find out the focal length of a spherical mirror using its radius. The focal length is half of the radius of curvature. Use this calculator for both concave and convex spherical mirrors.

- Focal Length of a Spherical Mirror - Find out the focal length of a spherical mirror using its radius. The focal length is half of the radius of curvature. Use this calculator for both concave and convex spherical mirrors.