The image above represents axial strain.

To compute for axial strain, two essential parameters are needed and these parameters are **change in length (ΔL) **and **length (L).**

The formula for calculating the axial strain:

ε_{o} = ^{ΔL} / _{L}

Where;

ε_{o} = Axial Strain

ΔL = Change in Length

L = Total Length

Let’s solve an example;

Calculate the axial strain when the change in length is 18 and total length is 32.

This implies that;

ΔL = Change in Length = 18

L = Total Length = 32

ε_{o} = ^{ΔL} / _{L}

ε_{o} = ^{18} / _{32}

ε_{o} = 0.5625

Therefore, the **axial strain **is **0.5625.**

**Calculating the Change in Length when the Axial Strain and Total Length is Given.**

ΔL = ε_{o} x L

Where;

ΔL = Change in Length

ε_{o} = Axial Strain

L = Total Length

Let’s solve an example;

Calculate the change in length when the axial strain is 21 and total length is 9

This implies that;

ε_{o} = Axial Strain = 21

L = Total Length = 9

ΔL = ε_{o} x L

ΔL = 21 x 9

ΔL = 189

Therefore, the **change in length **is **189.**

**Calculating the Total Length when the Axial Strain and Change in Length is Given.**

L = ^{ΔL} / _{εo}

Where;

L = Total Length

ε_{o} = Axial Strain

ΔL = Change in Length

Let’s solve an example;

Calculate the total length when the axial strain is 32 and change in length is 60.

This implies that;

ε_{o} = Axial Strain = 32

ΔL = Change in Length = 60

L = ^{ΔL} / _{εo}

L = ^{60} / _{32}

L = 1.875

Therefore, the **total length **is **1.875.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the axial strain.

To get the answer and workings of the axial strain using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **for** NGN 1,500 **per** annum** to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

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

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

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

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Geology**** **under **Add-on.**

Now, Click on **Rock Mechanics**** **under **Geology**

Now, Click on **Axial Strain**** **under **Rock Mechanics**

The screenshot below displays the page or activity to enter your values, to get the answer for the axial strain according to the respective parameters which are the **change in length (ΔL) **and **length (L).**

Now, enter the values appropriately and accordingly for the parameters as required by the **change in length (ΔL)** is **18 **and **length (L)** is **32.**

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the axial strain and presents the formula, workings and steps too.