Mirror Equation Calculator
Calculate image distance, magnification, and image characteristics for concave and convex mirrors using the mirror equation 1/s + 1/s' = 1/f.
Input
Mirror Parameters
Focal length (f)
f = R / 2
Radius of curvature (R)
Input value (with sign)
Image Formation
Image distance (s')
Positive → image in front of mirror (real)
Lateral magnification (m)
m = −s'/s
Image height (h')
h' = m × h
Image Characteristics
Image type
Orientation
Size
Description
Abridged Optics — Mirror Equation Calculator v1.0Uses the paraxial mirror equation 1/s + 1/s' = 1/f with standard sign conventions: positive distances are in front of the mirror (real), negative distances are behind (virtual). For convex mirrors, R and f are internally negated.