ext4 vs NTFS: Linux and Windows File Systems Compared
Published on April 18, 2026
ext4 is the standard file system for Linux distributions. NTFS is the default for Windows. Each is optimized for its own OS and performs best there. ext4 handles many small files and frequent read/write operations faster. NTFS offers built-in encryption, compression, and granular access controls. Your choice depends on which operating system you are running.
Performance
ext4 uses extents (contiguous blocks of data) instead of indirect block mapping, which reduces fragmentation and speeds up large file operations. It supports delayed allocation, where data is buffered in memory and written in optimal batches, improving throughput for sequential writes. NTFS also uses extents and journaling but adds overhead from its Master File Table (MFT), security descriptors, and change journals. In benchmarks on the same hardware, ext4 typically wins on random read/write and file creation speed, while NTFS is competitive on large sequential reads.
File and Volume Limits
ext4 supports files up to 16 TB and volumes up to 1 EB (exabyte) with standard 4 KB blocks. NTFS supports files up to 16 EB and volumes up to 256 TB in practice. Both handle any realistic file size you would encounter. Neither has the 4 GB file limit of FAT32.
Journaling and Reliability
Both ext4 and NTFS are journaling file systems. ext4 journals metadata by default and can optionally journal data too (at a performance cost). NTFS journals both metadata and file changes through its transaction log. Both recover gracefully from power failures. ext4 has a faster fsck (file system check) because it marks unallocated blocks and inode groups, letting the checker skip them entirely. NTFS consistency checks (chkdsk) can take significantly longer on large volumes.
Security and Features
NTFS includes EFS (Encrypting File System) for per-file encryption, BitLocker for full-disk encryption, ACLs for fine-grained access control, and disk quotas. ext4 uses Unix-style permissions (owner/group/other with read/write/execute) and supports POSIX ACLs for more granular control. Linux handles encryption at the block layer (LUKS/dm-crypt) or per-directory (fscrypt) rather than baking it into the file system itself. Both approaches work well, but NTFS is more self-contained while ext4 relies on the broader Linux ecosystem.
Cross-Platform Access
Windows cannot read ext4 drives natively. Third-party tools like Ext2Fsd or WSL can provide access, but it is not seamless. Linux reads and writes NTFS through the ntfs3 kernel driver (kernel 5.15+), which performs well for most use cases. If you dual-boot Windows and Linux, exFAT or NTFS is the practical choice for shared partitions since both OSes can access them. For choosing between Linux file systems, see ext4 vs XFS. For transferring files between systems, our ZIP Files tool can compress them first to save space and time.