# How to Calculate and Solve for Mass | De Broglie’s Law

**Last Updated on July 22, 2021**

The image above represents mass.

To compute for mass, three essential parameters are needed and these parameters are **Planck’s Constant (h), Wavelength (λ)** and **Velocity (v).**

The formula for calculating the mass:

m = ^{h} / _{λv}

Where;

m = mass

λ = wavelength

h = Planck’s constant

v = velocity

Let’s solve an example;

Find the mass when the wavelength is 4, the planck’s constant is 6.626e-34 and the velocity is 2.

This implies that;

λ = wavelength = 4

h = Planck’s constant = 6.626e-34

v = velocity = 2

m = ^{h}⁄_{λv}

m = ^{6.62607004e-34}⁄_{(4)(2)}

m = ^{6.62607004e-34}⁄_{(8)}

m = 8.28e-35

Therefore, the **mass **is **8.28e-35 kg.**

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

To get the answer and workings of the mass 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 2,000 **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 **Basic Chemistry **under **Chemistry****.**

Now, Click on **De Broglie’s Law**** **under **Basic Chemistry**

Now, Click on **Mass **under **De Broglie’s Law**

The screenshot below displays the page or activity to enter your values, to get the answer for the mass according to the respective parameters which is the **Planck’s Constant (h), Wavelength (λ)** and **Velocity (v).**

Now, enter the value appropriately and accordingly for the parameter as required by the **Planck’s Constant (h)** is **6.626e-34**,** Wavelength (λ) **is **4** and **Velocity (v)** is **2**.

Finally, Click on Calculate

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