How to Check the Memory Usage on a Mac: 2 Easy Ways

Use Activity Monitor to check app memory use and Memory Pressure, then review the guide’s suggestions for understanding and reducing memory demand.Use Activity Monitor to check app memory use and Memory Pressure.

TL;DR

To check the memory usage on a Mac, follow these steps:

  1. Open Spotlight and search for Activity Monitor.
  2. Go to the Memory tab.
  3. Check app memory usage and the Memory Pressure chart.

Tried and Tested ✅: The methods and steps mentioned in this article have been tried and tested firsthand by Ojash Yadav on his MacBook Pro M3 and rechecked for errors on Hashir’s MacBook Air M2.

Feeling like your Mac is slowing down? Checking memory usage is a simple fix that can help you see what’s taking up space and what needs cleaning.

How to Check the Memory Usage on a Mac

How We Check Our Guides We use Apple’s support documents and current developer instructions to check the steps. Screenshots and menu names can differ between versions, so follow the branch for your Mac. Read our editorial process.

Below, I am going to share two different methods to check memory usage on a Mac:

1. Using Activity Monitor

Activity Monitor is a built-in macOS tool that provides real-time insights into your Mac’s memory usage. Here’s how to check the memory usage on a Mac using the Activity Monitor:

  1. Click the magnifying icon in the menu bar to open Spotlight Search.
click the magnifying icon in the menu bar at the top
  1. Type Activity Monitor in Spotlight and press Enter.
type activity monitor in spotlight search
  1. Click the Memory tab to see the memory usage statistics for each app.
click the memory tab in activity monitor
  1. Here, you’ll see a list of running processes and how much memory they are using. By default, the processes are sorted by their memory usage, with the most memory-intensive processes at the top of the list.
memory usage column in activity monitor
  1. At the bottom of the Activity Monitor window, you’ll see a Memory Pressure chart that shows if your Mac needs more RAM (yellow or red) or if it has sufficient memory (all green).
memory pressure bar at the bottom of activity monitor

After checking your Mac’s memory usage, it’s important to interpret the statistics to understand your computer’s performance fully. Let’s explore the meaning of each statistic:

  • Memory Pressure: Shows the current load on the Mac’s memory. Green means enough memory, yellow or red means more is needed.
  • Memory Used: Displays the memory currently being used.
  • Cached Files: Memory used to store files for quicker access. Normal, not a problem.
  • Swap Used: Amount of virtual memory in use.
  • Compressed: Memory compressed to save space. High values suggest low physical memory.
  • Page Outs: Data moved from RAM to virtual memory. High page outs indicate insufficient physical memory.

Many people forget that clicking the red ‘X’ doesn’t close an app. Make sure to quit apps properly to free up memory.

2. Using a Third Party

Third-party apps make it easy to monitor and manage memory. MacKeeper offers an easy way to monitor and free up your Mac’s memory with a more user-friendly interface. Here is how:

  1. Get MacKeeper MacKeeper and install it on your Mac.
  2. Open Mackeeper and click Memory Cleaner in the left sidebar.
select memory cleaner under performance
  1. Click Open to start the Memory Cleaner.
click open in the memory cleaner
  1. You can see the occupied and available memory on your Mac. Tap the Clean Memory button to free up available memory.
click clean memory
  1. Once the memory cleaning cycle is complete, it will free up available memory and you’ll see how many GBs it cleaned in the last cleanup.
memory cleaned after a cycle

Freeing up RAM improves your Mac’s performance but also causes applications to reload data from scratch, which may take some time.

Tips to Reduce Memory Usage on Your Mac

To use less memory on your Mac, consider these tips:

  1. 🚪 Close Unused Apps: Regularly check and close unused apps to free up memory.
  2. 🛠️ Manage Startup Items: Cleaning up Login Items improves startup speed. You can do this in System Settings.
  3. 🌐 Optimize Browser Usage: Fewer tabs and extensions reduce memory strain.
  4. 🔄 Keep macOS Updated: Updates often improve memory efficiency.
  5. 💾 Upgrade Hardware: Adding more RAM improves performance, especially on older Macs.

Monitor the Memory Usage on Your Mac

Now that you know how to check and interpret memory usage statistics, here are some more tips for managing memory usage on your Mac:

  • Declutter your Mac by removing the cache and deleting junk files regularly.
  • Remove unwanted startup apps via System Settings > General > Login Items.
  • Use MacKeeper’s Memory Cleaner to inspect occupied and available RAM and review active apps by memory use. Save your work before closing an app, then compare the memory figures.

Frequently Asked Questions

How much memory should my Mac have?

Your Mac should have at least 4GB of RAM for basic tasks and 8GB of RAM for more demanding tasks. Higher amounts of RAM will improve your computer’s speed and enable it to run more complex tasks. It is also important to choose an SSD hard drive over a traditional hard drive to make your Mac faster and more responsive.

Can I add more memory to my Mac?

You can add more memory to your Mac, but it depends on its model. Some Macs allow upgrading the RAM, while others don’t. For instance, you cannot upgrade the RAM on a MacBook Air. So, check your Mac’s specifications to see if it’s possible to upgrade the RAM.

What should I do if my Mac runs out of memory frequently?

If your Mac runs out of memory frequently, you should optimize your system by closing any unnecessary applications or processes. Also, quit background processes and applications using large amounts of RAM. Additionally, delete unused files and programs to free up valuable RAM resources. Finally, if possible, upgrade your Mac’s RAM to a higher capacity.

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Ojash

Author

Hi there! I'm Ojash, a tech journalist with over a decade of experience in the industry. I've had the privilege of contributing to some of the world's largest tech publications, making my mark as a respected Mac expert. My passion lies in exploring, using, and writing about MacBooks, and I enjoy sharing my expertise to help others make informed decisions and get the most out of their MacBook experience. Join me as we delve into the fascinating world of MacBooks together!

Hashir Ibrahim

Reviewer

Hello! I'm Hashir, a seasoned tech journalist with a unique blend of academic expertise and hands-on experience. With a bachelor's in IT, a master's in cybersecurity, and over a decade in the industry, I've built a reputation for demystifying complex Apple hardware. My work has been featured in top tech outlets like MakeUseOf and MakeTechEasier. As the senior writer at MacBook Journal, I write guides that help you solve any issues you have with your mac.

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