How to Format An SD or Micro SD Card on Your Mac

Formatting an SD or a Micro SD card on Mac is a super simple process that will not take you longer than 3 minutes. 

The only little stumbling block is some Macs don’t have an SD card reader (post-2015 MacBook Pros) and some do. 

To get around that you’ll most likely need a thing called an SD card adapter which can wonder at times to save the in-deficiencies on Macs. (you don’t need to get one if your Mac has an SD card slot)

The one I’m using personally is the Anker 8-in-1 card reader which at US$9.99 is a pretty good deal on Amazon. You can carry it around wherever you travel and most importantly it can last.

In this guide, I’ll show you how you can format an SD card or a Micro SD card on your Mac.


Note ⚠️ 

Formatting an SD card or Micro SD card means it will erase all the data on the card too. So even though you’re dying to re-format your card to a different file system format as quickly as possible, it’s important that you backup all of the data (if any) just in case if you need them in the future.


Let’s dive right in.


How to Format an SD or Micro SD Card on Mac: 7 Steps 


  1. Connect the SD card or microSD card that you’re trying to format to your Mac.
  2. Next, open up your Applications folder (it’s on your Mac’s dock). Then look for the Utilities. Inside the Utilities folder, click on Disk Utility.
  3. Good. Now find and select your SD card from the column on the left. Do you see it?
  4. Next, simply click the Erase tab at the very top menu under the page heading “Disk Utility”.how to format sd card mac


  1. Let’s choose the format we want to format our SD card. From the pop-up menu which says Erase “your_SD_Card_name”? you can rename the SD Card as well as choose the format from the dropdown list of formats to format sd card mac


  1. Once you’ve chosen your format, simply hit the Erase button. This will now begin the process of formatting your SD card or microSD card.
  2. Finally, once the formatting is done, make sure to get too excited and pull out the damn SD card like your pulling out, urm, I can’t really think of an analogy to put here. Just be sure to find the formatted SD card from the left-hand sidebar and then press the Eject button.

If you‘re asking the question “Why am I not allowed to format my SD card or microSD card to MS-DOS?” then know that you really can’t. This is because the Disk Utility tool will not allow you to format SD cards or microSD cards which are 32GB or smaller in size. You’ll find that the option for MS-DOS will be grayed out.

You should try and go with exFAT instead of in this case. 🙂


Don’t forget to share this guide.




  • Jake Kovoor

    Jake is the Editor-in-Chief of Saint and an independent software developer, with a Bachelors in Computer Science from Lancaster University, UK. He loves trying out various tech from the Flipper Zero to coding Raspberry Pis for automation. He started Saint back in 2016, having written over 100 posts, with the sole purpose of creating guides for software that had yet to exist back then to help users navigate around their technical problems.

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