Your laptop is 64-bit when it shows x64 or ARM64; x86 usually means 32-bit, and you can confirm it in your system info page.
You don’t need a tech background to figure out whether your laptop is 32-bit or 64-bit. You just need the right screen, or one short command. Once you know the bit version, installs get smoother, drivers match your hardware, and you stop guessing when a download page asks “x86 or x64?”
This walkthrough covers Windows, macOS, Linux, and Chromebooks. It also shows how to read what you find, so you can pick the right apps and avoid the common traps that waste time.
What “Bit” Means For A Laptop
When people say “bit,” they’re talking about the system architecture your laptop runs. In practice, you’ll see it written as x86, x64, or ARM64.
- 32-bit (x86): Older setup. Many modern apps no longer ship 32-bit builds.
- 64-bit (x64): Standard on most Intel and AMD laptops made in the last decade.
- 64-bit (ARM64): Common on newer Windows ARM laptops and Apple silicon Macs.
Two bits of info matter:
- Operating system bitness: The Windows/macOS/Linux install itself.
- CPU capability: What the processor can run.
A laptop can have a 64-bit CPU while running a 32-bit operating system. That combo shows up on older Windows installs and on upgraded machines. A 32-bit CPU can’t run a 64-bit operating system.
How To Check What Bit My Laptop Is
Start with the method that matches your laptop. If you’re not sure which operating system you’re on, check the logo on boot or open Settings and look for “About.”
Check On Windows 11 Or Windows 10
The simplest route is the About page in Settings.
- Open Settings.
- Go to System → About.
- Find System type under device specs.
You’ll see wording like “64-bit operating system, x64-based processor” or “32-bit operating system, x86-based processor.” Microsoft documents this flow in its Windows support notes on 32-bit and 64-bit Windows.
Check Via System Information
If Settings is locked down (work device) or you want more detail:
- Press the Windows logo button, type System Information, then open it.
- Click System Summary.
- Read System Type.
Common results include x64-based PC, x86-based PC, or ARM-based PC.
Check On macOS
On modern Macs, you’re dealing with 64-bit hardware. The practical question is whether the Mac uses Intel (x86_64) or Apple silicon (ARM). That affects some installers and virtual machines.
- Click the Apple menu ().
- Select About This Mac.
- Look for Chip (Apple silicon) or Processor (Intel).
Apple’s Mac Help page on getting system information about your Mac shows where this info lives, along with the full system report.
Check In Terminal
If you like a simple readout, Terminal can confirm the architecture label:
- Intel Mac: you often see x86_64.
- Apple silicon: you often see arm64.
On macOS, run uname -m. The output is the architecture string.
Check On Linux
Linux distros vary in menus, but the command route is consistent. Open a terminal and run one of these:
- uname -m (prints the machine architecture)
- getconf LONG_BIT (prints 32 or 64)
Typical outputs:
- x86_64 or aarch64 → 64-bit
- i686 or i386 → 32-bit
Check On A Chromebook
Chromebooks usually run 64-bit hardware, but the browser and Linux container (if enabled) can differ by model.
- Open Chrome and type chrome://system in the address bar.
- Search the page for cpuinfo or uname entries.
If you use Linux (Crostini) on a Chromebook, open the Linux terminal and run uname -m there too.
How To Read The Results Without Guessing
Bit labels can look cryptic on first glance, so here’s a plain-English map.
- x64, x86_64: 64-bit on Intel/AMD.
- ARM64, arm64, aarch64: 64-bit on ARM chips.
- x86, i386, i686: 32-bit on Intel-style chips.
On Windows, “64-bit operating system” is the line that drives most download choices. The processor line is still useful. If Windows says 32-bit OS on an x64-based processor, your laptop can run 64-bit Windows, but your current install is 32-bit.
Checking What Bit Your Laptop Is On Windows, Mac, And Linux
If you just want a one-minute confirm, these are the shortest paths that still give a solid answer.
- Windows: Settings → System → About → System type.
- macOS: Apple menu → About This Mac → Chip or Processor.
- Linux: Terminal → getconf LONG_BIT.
When you’re done, write down two items: “OS is 64-bit/32-bit” and “CPU is x64/ARM64/x86.” That’s all you need for most installs.
| Device Or OS | Where To Check | What You’ll See |
|---|---|---|
| Windows 11/10 | Settings → System → About → System type | “64-bit operating system” or “32-bit operating system” |
| Windows (detail) | System Information → System Summary → System Type | x64-based PC, x86-based PC, or ARM-based PC |
| macOS | Apple menu → About This Mac | Chip (Apple silicon) or Processor (Intel) |
| macOS (Terminal) | Run uname -m | arm64 or x86_64 |
| Linux | Run getconf LONG_BIT | 32 or 64 |
| Linux (alt) | Run uname -m | x86_64, aarch64, i686, i386 |
| Chromebook | chrome://system (search cpuinfo) | Architecture strings tied to the CPU |
| BIOS/UEFI | Boot menu or firmware info screen | CPU family and model; useful when OS won’t boot |
What To Do After You Know Your Laptop Bit Version
Knowing the bit version pays off when you’re picking installers, drivers, and tools. Use these rules of thumb.
Pick The Right Download On Software Pages
Many download pages offer two buttons, often labeled x86 and x64. Match that to your operating system bitness.
- If your OS is 64-bit, choose x64 (or ARM64 if your device is ARM).
- If your OS is 32-bit, choose x86.
Some apps also offer “universal” builds. On Macs, universal apps contain both Intel and Apple silicon code, so you don’t have to pick.
Match Drivers To The OS, Not Just The Chip
Driver installers also come in 32-bit and 64-bit builds. A 64-bit driver package won’t install on 32-bit Windows, even if the CPU is x64. If you’re hunting a graphics or Wi-Fi driver, check the OS bitness first, then select the driver package that matches.
Know The RAM And App Limits You Might Hit
On many 32-bit operating systems, usable memory tops out around 4 GB. Some systems report a bit less due to hardware mapping. If your laptop has 8 GB or 16 GB installed but a 32-bit OS, you may not see all of it.
On 64-bit systems, apps can use more memory, and newer creative and engineering tools often require 64-bit.
Virtual Machines And Emulators
If you run a virtual machine, match the guest OS to what your host supports. A 64-bit host can run 32-bit guests and 64-bit guests. A 32-bit host is far more limited.
On Apple silicon Macs and Windows ARM laptops, some virtual machine tools run ARM guests best. Intel x86 guests may still work through translation, but performance and compatibility vary by tool.
When The OS Won’t Boot
Sometimes you want the bit version because you’re preparing a repair USB or reinstall media, but the laptop won’t start. You still have a few options.
Check The Sticker, Model Page, Or Box Label
Many laptops list the processor family on the underside label or the original box. Intel Core i-series from the last decade is x64. Modern AMD Ryzen is also x64. That’s CPU capability, not OS bitness, but it tells you what the machine can run.
Use BIOS/UEFI Screens
Enter firmware setup during boot (often by pressing F2, Del, or Esc). Look for CPU details. You won’t see “32-bit” as a clean field every time, but you will see model strings you can match to the chip family.
Read Architecture From A Live USB
If you can boot a Linux live USB, open its terminal and run uname -m. That reads the hardware architecture directly. It won’t tell you what was installed before, but it confirms what the laptop can support.
Common Mistakes That Lead To The Wrong Download
Mixing Up x86 With “Old”
x86 often means 32-bit in download menus, even when the CPU itself is modern. Treat x86 as a label, not a value judgment. It’s just a build target.
Assuming Windows 11 Can Be 32-Bit
Windows 11 ships as 64-bit only. If you’re on Windows 11, your OS bitness is settled. You still may see apps offering x86 builds, and those can run on 64-bit Windows in many cases.
Confusing ARM64 With x64
Both are 64-bit, but they’re not interchangeable. An ARM64 installer is made for ARM chips. An x64 installer is made for Intel/AMD. Some apps provide both. Some provide one. If your Windows About page says ARM-based, pick ARM64 when it’s offered.
| Task | Match This To Your Laptop | What To Do Next |
|---|---|---|
| App installer choice | Operating system bitness | Pick x86 for 32-bit OS; pick x64 or ARM64 for 64-bit OS |
| Driver install | Operating system bitness | Download the driver package that matches the OS type shown in system info |
| Game anti-cheat tools | OS type and CPU type | Prefer 64-bit OS when supported; check publisher notes for ARM devices |
| More usable RAM | OS bitness | If OS is 32-bit and RAM is above 4 GB, plan a move to 64-bit OS |
| Virtual machines | Host OS and CPU architecture | Use 64-bit hosts for 64-bit guests; on ARM, choose ARM guests when available |
| Browser extensions and plugins | Browser build and OS | Most modern browsers are 64-bit on 64-bit systems; update the browser first |
| Older peripherals | Driver availability for your OS | Check if the maker still ships 64-bit drivers; if not, use generic drivers where possible |
One-Page Checklist You Can Save
- Find the System type or architecture string on your device.
- Write down OS bitness and CPU architecture.
- Match app installers to OS bitness (x86 vs x64 vs ARM64).
- Match drivers to OS bitness, even when the CPU is 64-bit.
- If you’re stuck on 32-bit Windows with more than 4 GB RAM installed, plan a clean install of 64-bit Windows when you’re ready.
References & Sources
- Microsoft Support.“32-bit and 64-bit Windows: Frequently asked questions.”Shows where Windows lists system type and explains x86 vs x64 basics.
- Apple Support.“Get system information about your Mac.”Shows how to open About This Mac and System Information to view chip and hardware details.