Mac ↔ Windows File Size Converter
Convert between the decimal (macOS) and binary (Windows) file sizes.
macOS
Decimal · 1 GB = 1,000,000,000 bytes
Windows
Binary · 1 GB = 1,073,741,824 bytes
What's the difference?
macOS uses decimal measurements:
1 KB = 1,000 bytes
1 MB = 1,000,000 bytes
1 GB = 1,000,000,000 bytes
1 TB = 1,000,000,000,000 bytes
Windows uses binary measurements:
1 KB = 1,024 bytes
1 MB = 1,048,576 bytes
1 GB = 1,073,741,824 bytes
1 TB = 1,099,511,627,776 bytes
In both systems, 8 bits = 1 byte.
macOS uses decimal measurements:
1 KB = 1,000 bytes
1 MB = 1,000,000 bytes
1 GB = 1,000,000,000 bytes
1 TB = 1,000,000,000,000 bytes
Windows uses binary measurements:
1 KB = 1,024 bytes
1 MB = 1,048,576 bytes
1 GB = 1,073,741,824 bytes
1 TB = 1,099,511,627,776 bytes
In both systems, 8 bits = 1 byte.