exFAT vs APFS vs NTFS: Which is the best format for an external hard drive?

exFAT vs APFS vs NTFS : Which is the best format for an external hard drive?

The “best” format depends on a simple question: will you use it on a Mac, on Windows, or on both?
Here's the right choice for each scenario (without complicating things).

1) If you need Mac + Windows: exFAT (in most cases)

Apple recommends ExFAT as the preferred format for hard drives larger than 32GB when used with Windows computers.
Furthermore, Microsoft positions exFAT as suitable for transfer/storage on permanent or removable media , including between systems.

Use exFAT when:

  • They want a "universal" disk for exchanging files between Mac and Windows;

  • You need large files (e.g., videos) without the typical limitations of FAT32.

2) If it's only a Mac: APFS (especially on SSD)

Apple's Disk Utility describes APFS as a modern format with features such as strong encryption, snapshots, and space sharing , and is supported for data and boot volumes in macOS 10.13+.

Use APFS when:

  • The disc will remain within the Apple ecosystem;

  • It wants modern features (instantaneous/security) and better integration with macOS.

3) If it's only Windows (and you want advanced features): NTFS

Microsoft highlights NTFS for features such as granular permission control (ACLs) and Windows-centric security.
And Microsoft itself has a feature comparison between NTFS and exFAT (including sections such as journaling, security, compression, and quotas).

Use NTFS when:

  • The disk is primarily Windows;

  • You need advanced permissions/features (professional environment).

4) Encryption (recommended for portable disks)

If you're going to carry the disc, encryption is a huge layer of security.

  • Microsoft explains that BitLocker To Go applies to removable drives (including external disks) and works with NTFS/FAT/exFAT.

  • On Mac, APFS "is born" with strong encryption support, and Disk Utility offers appropriate formats and options.

FAQ

Which form factor should I choose for an external SSD on Mac and Windows?
Generally, exFAT is used for compatibility between the two.

Is APFS better than exFAT?
For use only on Mac, APFS offers advanced features (encryption/snapshots). For Windows compatibility, exFAT is usually the practical choice.

Can I encrypt an exFAT disk in Windows?
BitLocker To Go supports removable drives formatted in NTFS/FAT/exFAT.