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Refractive Index Calculator

Calculate refractive index from light speed in vacuum and a medium.

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Calculator Details

CategoryPhysics

Inputs2

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RunsIn your browser

Before You Calculate

Confirm the value for Speed in vacuum (m/s).
Confirm the value for Speed in medium (m/s).

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Calculations run instantly in your browser. Your entries aren't sent to or stored on a server.

Written By

Robert Threadgill
Founder

Founder of Simple Calculator Tools. Builds and tests every calculator on this site personally before publishing.

Speed in vacuum (m/s)

Speed in medium (m/s)

Result

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