How can I tell if my Windows operating system is 32-bit or 64-bit?

Follow the Given Steps:

• Open Windows Explorer
• Right-click on Computer
• Select "Properties"
• Look for the "System" heading to find the "System type"
• A 64-bit system may shown as: "64-bit Operating System".If you are running a 32-bit version of Windows 8, 32-bit Operating System is displayed in the System type field under the System heading.

The terms 32-bit and 64-bit refer to the way a computer's processor (also called a CPU), handles information. The 64-bit version of Windows handles large amounts of random access memory (RAM) more effectively than a 32-bit system. 32-bit vs 64-bit- How to determine whether a computer is running a 32-bit version or 64-bit version of the Windows operating system?

Alternative Method : View the System window in Control Panel

1. Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search. OR Go to start menu and step 2
2. Type system in the search box, and then tap or click Settings.
3. Tap or click System.
4. If you are running a 64-bit version of Windows 8, 64-bit Operating System is displayed in the System type field under the System heading. If you are running a 32-bit version of Windows 8, 32-bit Operating System is displayed in the System type field under the System heading.