By Emily / Last Updated March 4, 2022

What does FAT32 mean on SD card?

FAT32 stands for File Allocation Table 32 (FAT32). It is a traditional file system, old as Windows 95 and originally developed to replace the older FAT16. You might have found that most flash drives, or SD cards you purchased are formatted to be FAT32 by default. That’s because FAT32 comes with the maximum compatibility. With FAT32 file system, the SD card can work well on all versions of Windows, Mac, Linux, game consoles and anything with a working USB port.

Therefore, most users decide to format SD card to FAT32 file system via an SD Card FAT32 formatter so as to get incredible reading and writing compatibility with the widest range of devices.

Can you format a 64GB/128GB SD card to fat32?

"I have a 128GB SD card and I tried to format it into FAT32. But Windows 10 Disk Management tool failed to complete this job because the drive is larger than 32GB. What can I do to solve this problem? Is there any specialized SD card Formatter FAT32 can help?"

Basically, you can use Disk Management, File Explorer and Diskpart command prompt to format SD card, pendrive or other devices to FAT32 file system. But they can only work when the chosen disk partition is smaller than 32GB. That’s because Windows system does not support to create a FAT32 partition on a more than 32GB drive. And FAT32 can only be used to format drives between 2GB and 32GB with Windows native tools.

Free download the best SD card FAT32 formatter for Windows

Although Windows built-in tools cannot format 32GB+ disk partition to FAT32, no need to be panic since a third-party powerful FAT32 format tool can help resolve this issue effectively. We'd like to recommend you trying AOMEI Partition Assistant Standard. It is able to format large disk partition such as 32GB, 64GB, 128GB, 256GB and 2TB drive at most to FAT32 file system successfully in Windows 11, 10, 8, 7. Free download and install software on your computer. Connect your SD card to your computer, and then follow the steps below to format large partition to FAT32.

Download Freeware Win 11/10/8.1/8/7/XP
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Attention: since formatting process will destroy or erase all data on the SD card, you should copy partition, which you plan to format, to another disk for data security.

Step 1: Install and launch AOMEI Partition Assistant, find and right-click the SD card to select Format Partition from the given list.

Format Partition

Step 2: Verify FAT32 under File System tab and click OK.


Note: you can set a partition label in order to better recognize your partitions in future.

Step 3: In the main interface, click on Apply to start formatting process.


After finishing all the steps listed above, you will be able to successfully format SD card to FAT32 in Windows, no matter how large it is. Morever, if the current file system of the SD card is NTFS, you can use "NTFS to FAT32 Converter" to directly convert NTFS file system to FAT32 without formatting\losing data.

Ntfs To Fat32

Moreover, this SD card FAT32 formatter can also format SD card from RAW to FAT32 if the SD card becomes RAW format due to damaged file system.


With the free SD card formatter FAT32, you will be able to easily and successfully format 32GB+ SD card to FAT32 in Windows 11,10,8,7. To perform this task in Server 2019/2016/2012/2008/2003, you can try AOMEI Partition Assistant Server, which is compatible with both Windows and Server OS, and has more advanced functions like recovering missing partition, migrating OS to SSD, convert (boot) disk between MBR and GPT without deleting partitions, etc..