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Check Windows System Architecture (32/64-bit)

Use our web tool to automatically detect your Windows system architecture or follow the step-by-step instructions to manually check if your system is 32-bit or 64-bit, ensuring compatibility with software and .dll files.

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Auto-Detect System Compatibility

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This detection works entirely in your browser. No data is uploaded or transmitted.
Click “Start Detection” to identify your OS and architecture.

Check Architecture Manually

  1. Click Start, type About your PC, then open it.
  2. Alternatively: Settings → System → About.
Windows About page
Open the Windows “About” page to see device details.

Check “System type”

  1. Under Device specifications, find System type.
  2. It will say 64-bit operating system (x64-based processor) or 32-bit.
  3. Match your downloads (.dll and apps) to your system type.
Tip: If it shows 64-bit OS, x64-based processor, you can run both 64-bit and 32-bit apps.
System type shows 32-bit or 64-bit
“System type” indicates whether your Windows is 32-bit or 64-bit.

Quick FAQ

  1. Can 64-bit Windows use 32-bit .dll files? Yes — but only within 32-bit applications. A 64-bit program can’t load a 32-bit DLL.
  2. Can 32-bit Windows use 64-bit .dll files? No — 32-bit Windows can only use 32-bit DLLs.
  3. What does “architecture” mean? It refers to whether your processor and operating system are built for 32-bit or 64-bit instructions. Most modern PCs use 64-bit.
  4. Which DLL should I download? Always match the DLL to your Windows version and the app’s 32/64-bit edition.