Want to chat with family and friends but don't have your phone to hand? Then you can use the BlueStacks Android Emulator to install WhatsApp on your computer. This emulator works exactly like an Android device, allowing you to use WhatsApp just like on a smartphone.
Steps
Method 1 of 3: Install BlueStacks

Step 1. Download and install the BlueStacks App Player
BlueStacks is an Android emulator for Windows and OS X. You can use the program to run Android-only apps without needing an Android device. BlueStacks is available for free on the BlueStacks website.
- If you use Windows, download the BlueStacks Windows installer. If you are using a Mac, make sure to download the Mac version of the program.
- When installing BlueStacks, make sure "App store access" is checked.

Step 2. Launch BlueStacks for the first time
It may take a while for the associated apps to install as well. When the program starts up, you will first be given a tour of the BlueStack interface. Then the App Store will be opened.

Step 3. Log in with your Google account
To use the App Store, you will need to create a Google account or log in to your existing account. After all, BlueStacks is an Android emulator and so you need a Google account to download apps.
Method 2 of 3: Install WhatsApp

Step #1. Open the Google Play Store
Click on the magnifying glass in the top left corner of BlueStacks. The Google Play Store will now open. If this is your first time visiting the Play Store, you will be asked to accept the terms and conditions.

Step 2. Find WhatsApp
Click on the magnifying glass at the top right of the Google Play Store. Type in "WhatsApp" and click on the app in the list that appears.
When you first open the Google Play Store, WhatsApp is often immediately displayed in the top row of apps

Step 3. Download and install the app
Click the "Install" button at the top of the WhatsApp app page. You will now be asked to agree to the terms and conditions in order to install the app. Clicking "Accept" will automatically download and install the app. A message will automatically appear on your screen when the installation is complete.

Step 4. You can also install WhatsApp using an APK file
If you prefer not to use the Play Store, you can also download WhatsApp as an APK file. Once you have downloaded this file, it will be automatically installed in BlueStacks.
You can find the WhatsApp APK on the WhatsApp website or on several other Android websites
Method 3 of 3: Login and Chat

Step 1. Open the app
If you are still in the App Store, you can open WhatsApp by clicking the "Open" button at the top of the WhatsApp app page. If you are on the BlueStacks home screen, click on the WhatsApp icon at the top of your app list.

Step 2. Verify WhatsApp with your mobile phone
When you start WhatsApp for the first time, you will have to agree to the terms and conditions of the application. Once you've done this, you'll need to enter your phone number. WhatsApp will now send you a code by text message to verify your account.
Since BlueStacks is on your computer, but the SMS is sent to your phone, the first verification will fail. You will therefore have to request a new verification and have WhatsApp call you. You will then hear an automatic message containing a code

Step 3. Create your account
Once you have completed the verification process, you may be able to create a new account and profile for this account. Click "Next" when you are done with this.
If you don't have a paid account, you will now be able to use WhatsApp for free for ten months

Step 4. Add contacts
When you log in to WhatsApp for the first time, your contact list is automatically scanned for other WhatsApp users. If your friends don't have WhatsApp yet, you can invite them right away.

Step 5. Start using WhatsApp
You are now ready to chat and can chat with your friends and family just like on your phone. Use your mouse to click contacts and your keyboard to type messages. Have fun chatting!