Find your RAM amount in three clicks

You can find out how much RAM your computer has in under a minute without installing anything or restarting. On Windows, right-click "This PC" or "My Computer" on your desktop, select Properties, and look for "Installed RAM" in the System section. On Mac, click the Apple menu in the top left, select "About This Mac", and read the number next to "Memory". On Linux, open a terminal and type free -h, then look at the "Mem:" line.

RAM is the working memory your computer uses while programs are running — it is different from storage space. Knowing how much you have tells you whether your computer can handle the programs you use, or whether slowdowns are coming from not having enough memory to work with.

Key Takeaways

  • Windows shows RAM in System Properties under "Installed RAM"; Mac shows it in About This Mac under "Memory".
  • The number you see is the total amount available, not how much is currently in use.
  • Most modern computers come with 8 GB or 16 GB of RAM, though older machines may have 4 GB or less.
  • If you see your RAM amount is very low (2 GB or 4 GB), that is often why your computer feels slow when you open multiple programs.

Windows: Check RAM through System Properties

Right-click on "This PC" (Windows 10 and 11) or "My Computer" (older Windows versions) on your desktop. If you do not see either icon, click the Windows Start button, type "This PC", and click the result. A menu will appear with several options.

Select "Properties" from the menu. A window will open showing your system information. Look for the line that says "Installed RAM" — the number next to it is how much memory your computer has. It will be listed in gigabytes, usually written as "GB" (for example, "8 GB" or "16 GB").

If you cannot find "This PC" on your desktop, you can also reach the same screen by opening File Explorer (the folder icon on your taskbar), right-clicking the empty space in the left sidebar, and selecting "Properties".

Mac: Check RAM through About This Mac

Click the Apple menu (the apple symbol) in the very top left corner of your screen. A dropdown menu will appear. Select "About This Mac" from the list — it is usually near the top.

A window titled "About This Mac" will open. Look at the first tab, which is labeled "Overview". You will see a line that says "Memory" with a number next to it in gigabytes. That number is your total RAM.

If you want more detail about what type of RAM you have or how it is arranged, you can click the "System Report" button in that same window, then select "Memory" from the left sidebar. This shows whether your RAM is soldered to the motherboard (not replaceable) or in removable modules.

Linux: Check RAM from the terminal

Open a terminal window. On most Linux distributions, you can right-click the desktop and select "Open Terminal", or press Ctrl+Alt+T. Type the command free -h and press Enter.

The output will show several rows. Look at the row labeled "Mem:" — the first number in that row is your total RAM in gigabytes or megabytes. The second number shows how much is currently in use, and the third shows how much is free right now.

If you prefer a graphical view instead of the terminal, you can also open your system settings or system monitor process (the name varies by distribution) and look for a Memory or RAM section.

Understanding what the number means

The RAM amount you see is the total installed in your computer, not how much is currently being used. Even when your computer is idle, the operating system itself uses some RAM. When you open a web browser, that uses more. When you open multiple browser tabs, documents, or programs at the same time, they all compete for the available RAM.

If your computer has 8 GB of RAM and you are running a web browser with 20 tabs, a video editor, and a music streaming service, those programs together might need more than 8 GB. When that happens, your computer slows down because it has to move data to your hard drive or solid-state drive (which is much slower than RAM) to make room. This slowdown is one of the most common reasons computers feel sluggish.

Typical amounts of RAM are 4 GB (older machines or budget laptops), 8 GB (standard for most new computers), 16 GB (good for multitasking or creative work), and 32 GB or more (for specialized work like video editing or data analysis). If you have 4 GB or less and you regularly use multiple programs, that is likely a source of slowdowns.

Check how much RAM is actually in use right now

On Windows, open Task Manager by pressing Ctrl+Shift+Esc. Click the "Performance" tab on the left, then select "Memory". You will see a graph showing how much RAM is currently being used out of your total. The number at the top right shows the percentage in use.

On Mac, open Activity Monitor (search for it in Spotlight by pressing Cmd+Space, typing "Activity Monitor", and pressing Enter). Click the "Memory" tab. At the bottom of the window, you will see "Memory Pressure" and a breakdown of how much RAM is in use.

On Linux, the free -h command you ran earlier already shows this. The "used" column shows what is currently in use, and the "available" column shows what is free for new programs to use.

What to do if your RAM is very low

If you found that your computer has 2 GB, 4 GB, or even 6 GB of RAM, and you regularly use multiple programs or browser tabs, you have found a major reason for slowdowns. You have a few options depending on your computer type.

On a desktop computer, RAM is usually replaceable. You can buy new RAM modules and install them yourself, or take the computer to a repair shop. On a laptop, RAM is sometimes replaceable and sometimes soldered to the motherboard permanently. Check your computer's manual or search online for your specific model to find out.

If your RAM cannot be upgraded, or if upgrading is too expensive, you can reduce slowdowns by closing programs you are not actively using, limiting the number of browser tabs open at once, and avoiding running video editing or other heavy programs at the same time as other work.

Frequently Asked Questions

Is 8 GB of RAM enough?

For most everyday tasks — web browsing, email, documents, video streaming — 8 GB is sufficient. If you regularly work with video editing, large spreadsheets, or many browser tabs at once, 16 GB is more comfortable. The right amount depends on what you actually do with your computer.

Why does my computer show less RAM than I bought?

Your operating system reserves some RAM for its own use, so the amount shown in System Properties may be slightly less than what you physically installed. For example, a computer with 16 GB installed might show 15.9 GB available. This is normal and not a problem.

Can I add more RAM to my laptop?

It depends on your laptop model. Some laptops have RAM in removable slots that you can upgrade yourself; others have RAM soldered permanently to the motherboard. Search online for your specific laptop model and "RAM upgrade" to find out whether yours is upgradeable.

Does more RAM make my computer faster?

More RAM helps when you are running multiple programs or have many browser tabs open. If you are already using only a fraction of your current RAM, adding more will not make things faster. Check your current usage first using Task Manager, Activity Monitor, or the free command to see whether RAM is actually the bottleneck.

What is the difference between RAM and storage?

RAM is temporary working memory that your computer uses while programs are running — it is fast but clears when you shut down. Storage (your hard drive or solid-state drive) is permanent space where files and programs live. You need both, and they serve different purposes.