You can run Windows on a Mac, but the method depends on what you actually need
If you need to use a Windows program on your Mac, you have three real paths: virtualization (running Windows inside macOS), Boot Camp (restarting your Mac into Windows), or a compatibility layer that translates Windows commands to Mac commands. Which one works depends on your Mac's processor, how often you need Windows, and whether you need full Windows or just one specific program.
The most important thing to know first: if your Mac has an Apple Silicon chip (M1, M2, M3, or newer), Boot Camp does not work. If your Mac has an Intel processor, Boot Camp works but is increasingly difficult to set up. For most people, virtualization is the simpler choice today.
Key Takeaways
- Apple Silicon Macs (M1 and newer) cannot use Boot Camp, so virtualization or compatibility layers are your only options.
- Virtualization software like Parallels Desktop or UTM lets you run Windows inside macOS without restarting, but uses significant disk space and memory.
- Boot Camp on Intel Macs lets you restart into full Windows, but requires a Windows license and a large free partition on your drive.
- Compatibility layers like Crossover can run some Windows programs directly on macOS without needing Windows itself, but do not work for all software.
- Before you start, confirm your Mac's processor type and check whether your specific Windows program is known to work with your chosen method.
Check your Mac's processor type first
Click the Apple menu in the top left corner, then select "About This Mac". Look at the line that says "Chip" or "Processor". If it says M1, M2, M3, M4, or any number with an M, you have Apple Silicon. If it says Intel Core i5, i7, or i9, you have an Intel processor.
This matters because Apple Silicon and Intel Macs use completely different instruction sets — the fundamental language the processor understands. Windows was built for Intel and ARM processors, not Apple Silicon. This is why Boot Camp only works on Intel Macs, and why virtualization software for Apple Silicon has to translate Windows commands in real time.
Virtualization: running Windows inside macOS
Virtualization software creates a virtual computer inside your Mac. Windows runs in that virtual space, and you can switch between macOS and Windows by clicking a window or pressing a key. You do not restart your Mac. Both operating systems run at the same time, though Windows will be slower than it would be on native hardware.
The two main options are Parallels Desktop (paid, around $80 per year for a subscription) and UTM (free, open source). Parallels Desktop is easier to set up and faster, especially on Apple Silicon. UTM is slower but costs nothing and gives you more control. Both work on Intel and Apple Silicon Macs.
To use virtualization, you need a Windows license. You can buy Windows 11 Home or Pro directly from Microsoft, or you can sometimes find older Windows 10 licenses cheaper. The license is a product key — a 25-character code that you enter during Windows setup. Do not buy from third-party resellers unless you are certain they are legitimate; many cheap keys online are stolen or region-locked.
Virtualization requires significant disk space (at least 60 gigabytes for Windows itself, plus space for programs and files) and RAM (at least 8 gigabytes, though 16 is better). If your Mac has less than 256 gigabytes of storage or less than 8 gigabytes of RAM, virtualization will be slow and frustrating.
Boot Camp: restarting into Windows on Intel Macs only
Boot Camp is a tool built into Intel Macs that lets you partition your drive and install Windows directly. When you restart your Mac, you choose whether to boot into macOS or Windows. While running Windows, you have the full power of your Mac's hardware — no virtualization overhead, no translation layer. Windows runs as fast as it would on a native Windows computer.
The catch is that Boot Camp only works on Intel Macs, and Apple has made it increasingly difficult to use. You need a Windows 10 or Windows 11 license, a USB drive with at least 16 gigabytes of space, and a free partition on your Mac's drive of at least 55 gigabytes. The installation process involves downloading Windows from Microsoft, creating a bootable USB drive using a tool called Boot Camp Assistant, and then restarting and installing Windows — a process that typically takes one to two hours and has many points where it can fail.
If you have an Intel Mac and Boot Camp appeals to you, search for your specific Mac model and Windows version online before you start. Boot Camp support has been dropped for newer Intel Macs, and the process is different depending on whether you have an older or newer model.
Compatibility layers: running Windows programs without Windows
Crossover is a compatibility layer that translates Windows program commands into macOS commands in real time. It does not require a Windows license. It is faster than virtualization because it does not run a whole operating system. The downside is that it does not work for all Windows programs — some programs rely on Windows features that Crossover cannot translate.
Before you buy Crossover (around $60 for a one-time license), check the Crossover database to see whether your specific program is known to work. Search for the program name on the Crossover website. If it is listed as "Gold" or "Silver" rated, it will likely work well. If it is not listed or rated "Platinum" (which means it needs tweaking), you may run into problems.
Crossover works on both Intel and Apple Silicon Macs, and it requires much less disk space than virtualization — typically just a few gigabytes. It is a good choice if you need one or two specific Windows programs and you want to avoid the cost and complexity of a Windows license.
What to do before you install anything
Back up your Mac using Time Machine or another backup tool. Installing Windows or virtualization software involves partitioning your drive or making significant changes to your system. If something goes wrong, a backup is your safety net.
Check your Mac's available storage. Open Finder, click "About This Mac" from the Apple menu, then click "Storage". You need at least 60 gigabytes free if you are using virtualization, or 55 gigabytes if you are using Boot Camp. If you have less, delete files or move them to external storage first.
Research your specific Windows program. Search online for "[program name] + Mac" or "[program name] + Parallels" or "[program name] + Crossover" to see whether other people have successfully run it. If the program is very new or very specialized, it may not work with any of these methods.
The security difference between these methods
Virtualization and Boot Camp both run a full copy of Windows, which means Windows security updates explore. If you use Windows through virtualization, malware in Windows cannot directly infect macOS — they are separate systems. If you use Boot Camp, you are running Windows natively, so Windows security matters as much as it would on a Windows computer.
Compatibility layers like Crossover do not run Windows, so they inherit macOS security. A program running through Crossover has the same access to your Mac that it would have if it were a native Mac program. This is generally safer than running Windows, but it depends on whether you trust the specific program you are running.
Frequently Asked Questions
Can I install Windows directly on my Mac and replace macOS?
Not on Apple Silicon Macs — Windows does not run on Apple Silicon hardware at all. On Intel Macs, you technically could erase macOS and install Windows, but you would lose access to all your Mac software and you would not be able to use Boot Camp recovery tools. Virtualization or Boot Camp are the supported paths.
Will Windows run as fast through virtualization as it would natively?
No. Virtualization adds overhead because the software has to translate between macOS and Windows constantly. On Apple Silicon, the overhead is larger because the translation is more complex. You will notice the difference most in graphics-heavy programs or games. For office work and web browsing, the slowdown is usually acceptable.
Do I need to buy a Windows license if I use Crossover?
No. Crossover translates Windows program code to macOS code, so it does not require Windows itself. You only need a license if you use virtualization or Boot Camp, both of which run an actual copy of Windows.
What happens to my files if I use Boot Camp?
Your macOS files stay on the macOS partition and are not accessible while you are running Windows. Your Windows files stay on the Windows partition and are not accessible from macOS. You can move files between them by using an external drive or by setting up file sharing, but they are separate systems.
Can I undo Boot Camp and get my disk space back?
Yes. Boot Camp Assistant has a "Remove Windows Partition" option that will erase Windows and merge the space back into your macOS partition. This takes a few minutes and does not affect your macOS files. Virtualization is easier to undo — you just delete the virtual machine file.