The index of refraction is illustrated by the image below. To calculate index of refraction, two essential parameters are needed and these parameters are **Velocity of Light (C)** and **Velocity of Light in Medium (v).**

**The formula for calculating index of refraction:**

n =Â ^{C}/_{v}

Where:

n = Index of Refraction

C = Velocity of Light

v = Velocity of Light in Medium

Given an example;

Find the index of refraction when the velocity of light is 48 and the velocity of light in medium is 12.

This implies that;

C = Velocity of Light = 48

v = Velocity of Light in Medium = 12

n =Â ^{C}/_{v}

That is, n = ^{48}/_{12}

n = 4

Therefore, theÂ **index of refractionÂ **isÂ **4.**

**Calculating the Velocity of Light when the Index of Refraction and the Velocity of Light in Medium are Given.**

C = nv

Where:

C = Velocity of Light

n = Index of Refraction

v = Velocity of Light in Medium

Let’s solve an example;

Find the velocity of light when the index of refraction is 10 and the velocity of light in medium is 4.

This implies that;

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n = Index of Refraction = 10

v = Velocity of Light in Medium = 4

C = nv

So, C = (10)(4)

C = 40

Therefore, theÂ **velocity of lightÂ **isÂ **40.**

Read more:Â How to Calculate and Solve for Velocity of Light in Medium | Optical Properties

**Calculating the Velocity of Light in Medium when the Index of Refraction and the Velocity of Light are Given**

v = ^{C} / _{n}

Where:

v = Velocity of Light in Medium

n = Index of Refraction

C = Velocity of Light

Let’s solve an example;

Find the velocity of light in medium when the index of refraction is 12 and the velocity of light is 36.

This implies that;

n = Index of Refraction = 12

C = Velocity of Light = 36

v = ^{C} / _{n}

That is, v = ^{36} / _{12}

v = 3

Therefore, theÂ **velocity of light in mediumÂ **isÂ **3.**

**How to Calculate the Index of Refraction With Nickzom Calculator**

Nickzom Calculator â€“Â **The Calculator Encyclopedia** is capable of calculating the index of refraction.

To get the answer and workings of the index of refraction using the **Nickzom Calculator â€“ The Calculator Encyclopedia.Â **First, you need to obtain the app.

You can get this app via any of these means:

**Web**Â â€“Â https://www.nickzom.org/calculator-plus

To get access to theÂ **professionalÂ **version via web, you need toÂ **register**Â andÂ **subscribeÂ **to have utter access to all functionalities.

You can also try theÂ **demoÂ **version viaÂ https://www.nickzom.org/calculator

**Android (Paid)**Â â€“Â https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)**Â â€“Â https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)**Â â€“Â https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to theÂ **Calculator Map,Â **then click onÂ **Materials and MetallurgicalÂ **underÂ **Engineering****.**

Now, Click on **Optical Properities****Â **underÂ **Materials and Metallurgical**

Now, Click onÂ **Index of Refraction**Â underÂ **Optical Properities
**

The screenshot below displays the page or activity to enter your values, to get the answer for the index of refraction according to the respective parameter which is the **Velocity of Light (C)** and **Velocity of Light in Medium (v).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Velocity of Light (C)Â **isÂ **36** and **Velocity of Light in Medium (v)** is **12**.

Finally, Click on Calculate

As you can see fromÂ the screenshot above,Â **Nickzom Calculator**â€“ The Calculator Encyclopedia solves for the index of refraction and presents the formula, workings and steps too.