Asya Karapetyan
Content marketer, who specializes in Mac how-to guides
November 25, 2022
12 minutes to read

The Mac’s performance speed depends on Mac memory volume. If any app you open on your system runs out of the memory, it may slow your Mac down. In this article, we will explain how to check Mac RAM usage and how to free up RAM to fix a slow Mac.


1. How to check the memory on Mac.
2. How to check memory usage by apps on Mac.
3. How to free up memory (RAM) on Mac.

How to check the memory on Mac

Follow these steps to get Mac memory information:

  1. Go To Apple Menu (find the Apple sign in the top left corner of the screen).
  2. Select About This Mac.
  3. About This Mac menu command

  4. Here you can see how much memory is installed on your Mac.
  5. About This Mac window

On macOS Ventura, this panel has another design:

How to check memory usage by apps on Mac

There are different ways to check application memory usage on Mac. This tutorial covers two of them: using the Activity Monitor and using a special tool Memory Cleaner. Learn both of them and choose the easiest for you way to check memory usage and free up inactive RAM memory on Mac.

How to check memory usage on Mac with Activity Monitor

  1. Launch the Activity Monitor application. You can find it in the Launchpad.
  2. Switch to the Memory tab.
  3. Here you can view the detailed information about the memory usage by apps and all processes of your system. At the bottom of the window, you can see an amount of used memory, operation diagram and other information of RAM usage.

Memory consuption panel in Activity Monitor

How to check memory usage on Mac with Memory Cleaner

You can view Mac memory usage with a free application Memory Cleaner. With Memory Cleaner you view how much RAM each application uses and clear inactive RAM memory.

  1. Launch Memory Cleaner
  2. Click the application icon in the toolbar. Here you will find the next information about memory on Mac:
    • the total size of available RAM
    • size of used RAM
    • Memory usage by apps

Memory Cleaner window showing Memory usage

How to free up RAM memory on Mac

The simplest way to free up RAM on Mac is to restart your computer. Restarting the system empties the RAM and disk caches and as a result, helps to fix a slow Mac. However, the idea of restarting the system each time you need to free up RAM is not the best choice. It is inconvenient at least since it interrupts your work on the computer. So read on to learn the best way to free up memory on Mac.

You can use Memory Cleaner to clear RAM on Mac with just one click. Also, the apps can automatically clear RAM each time your Mac is running out of free memory or each time you close apps that are using a lot of memory.

So follow these steps to free up RAM on Mac:

  1. Launch Memory Cleaner.
  2. Click on the application’s icon in the toolbar.
  3. Click Cleanup. It will take just a few seconds to complete the cleaning of Mac RAM memory.

RAM cleaning with Memory Cleaner app


Now you know how to check the memory on Mac and what to do when your Mac is running out of free memory. You can use a free Memory Cleaner for all these tasks. If clearing RAM didn’t help you to speed up your Mac, read our previous article 7 Steps to increase Mac’s speed.

FAQ about resetting on Mac
How to reduce Mac memory usage?
How to check how many GB of RAM do I have?
How to reset the admin password on Mac?
What is the best memory cleaner for Mac?

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