There are actually two ways to see the uptime of your Mac and neither of these requires a third-party app. What you need to accomplish the task is there already on your Mac.
Finding Mac Uptime Using System Panel
This requires you to access the system panel where the uptime information is stored.
Click on the Apple logo in the top-left corner on your screen, and select the option that says “About This Mac.” You will access the system panel from there.
When the About Mac panel launches, click on the option that says “System Report…” to be taken to the system panel.
When the System Report panel launches, select “Software” from the list on the left side. That is where the uptime information for your Mac is located. In the right panel you should be able to see some software information about your Mac. You will find “Time since boot,” the uptime of your Mac. In the following image the uptime of my Mac is 8 hours and 3 minutes. If it was in days, it would say so.
If you would prefer using Terminal to accomplish the task, here’s how.
Finding the Mac Uptime Using Terminal
Terminal only requires a single command to show you your Mac’s uptime.
Click on Launchpad in your dock, search for and click on Terminal, and it will launch for you.
When Terminal launches, type in the following command and press Enter. It will fetch the uptime information for your machine.
As soon as you enter the above command, Terminal should show you information about the uptime of your Mac. In this method, you get more information than you would with the system panel such as the time stamp of when the uptime report was generated, load average, and number of users.
Conclusion
Should you ever need access to the information of how long your Mac has been active for, you can follow either of these two ways to gather that data on your machine. Let us know how this helped you! Image Credit: Gizmodo