How does the Mirror Equation Calculator work?

Enter object distance and mirror radius, or two distances Then: The calculator applies 1/f = 1/s_o + 1/s_i where f = R/2 Then: Results show image location, size, and orientation.

Can you give an example of how to use the Mirror Equation Calculator?

Example: Input s_o = 20 cm, R = 30 cm gives a result of s_i = 60 cm, magnification = 3× (Real inverted magnified image).

Is the Mirror Equation Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Mirror Equation Calculator?

Our Mirror Equation Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Mirror Equation Calculator

Mirror Equation

Radius of Curvature (m)

Object Distance (m)

Mirror equation relates object distance, image distance, and mirror radius of curvature. It applies to both concave and convex mirrors, predicting image formation.

Symbol	Name	Unit	Description
R	R value	—	Variable used in the calculation
f	1/s_o + 1/s_i where f = R/2	—	1/s_o + 1/s_i where f = R/2

Difficulty:intermediate

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Did You Know?

Curved mirrors are used in telescopes, satellite dishes, and headlights to focus or spread light efficiently.

References

›Mirror Equation Guide

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Mirror Equation Calculator

Mirror Equation

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