What you provide
What you provide
- Object distance expressed in m, using the same scenario as the other inputs
- Image distance expressed in m, using the same scenario as the other inputs
PHYSICS / OPTICS
Spherical Mirror Equation Calculator
Solve focal length and magnification from object and image distances. Inspect the governing equation, substituted SI values, output, and model boundaries in one guided workspace.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
Solve focal length and magnification from object and image distances. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
Calculation path
f = d_od_i/(d_o+d_i)
What you receive
What you receive
- Focal length in m from the stated equation
- A symbolic formula plus substituted working with your values
- Visible assumptions, field guidance, and an authoritative learning reference
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
Paraxial rays, a spherical mirror, and one consistent sign convention are assumed.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
Reviewed reference factors