How to Check if Your Computer Is 64 Bit

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This article explains how to determine whether your computer/server is running a 32-bit or 64-bit version of a MS Windows Operating System.

Method 1
Method 1 of 5:

Checking Windows 7/Vista/Server 2008/R2

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    • Click on the Start Button.
    • Type 'System' in the Start Search box
    • Click "System" in the Programs list.
  2. In the "System" window it will state either "32-bit Operating System" or "64-bit Operating System".
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Method 2
Method 2 of 5:

Checking Windows XP/2000/Server 2003

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  1. Type the following: sysdm.cpl and click OK.
  2. Under "System Type" it will either state "x86" if a 32-bit version of Windows is installed, or "EM64T" if a 64-bit version of Windows is installed.
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Method 3
Method 3 of 5:

Checking Windows 10

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  1. 1
    Type in the "Control Panel" search box.
  2. 2
    Click "Control Panel". Next, press "System & Security". Press "System" and read the results.
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Method 4
Method 4 of 5:

Checking Windows 11

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  1. 1
    Open Windows Settings page. Open Windows Settings by pressing Win+I on the keyboard and the System page will be shown at first by default.
  2. 2
    Choose and view About. Scroll down to About at the bottom of System. Click on it so you can view the information in System type .
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Method 5
Method 5 of 5:

Checking Mac OS X

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  2. "uname -a" at the prompt.
    • Note: do not use quotes. These were placed for emphasis.
    • Note: ensure to insert the blank space between "uname" and "-a" strings.
  3. The terminal will display two lines of text. At the end of the second line, you will find wording such as:
    1. RELEASE_I386 i386 ; the latest "i386" means that you're running 32bits kernel
    2. RELEASE_X86_64 x86_64 ; the latest "x86_64" means that you're running 64bits kernel
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