- A file size is the measure of space a file takes on a storage medium such as a computer hard drive.
- The basic unit used in computer data storage is called a bit .
- 8 Bits is equal to 1 Byte.
- Bit: A Bit is a value of either a 0 or 1.
- Byte: 1 Byte = 8 Bits
Name | Symbol | Measurement in Bytes |
---|---|---|
KiloByte | KB | 2^10 |
MegaByte | MB | 2^20 |
GigaByte | GB | 2^30 |
TeraByte | TB | 2^40 |
PetaByte | PB | 2^50 |
ExaByte | EB | 2^60 |
ZettaByte | ZB | 2^70 |
YottaByte | YB | 2^80 |
File sizes are limited by the file system that is used and its implementation. Here are details on the common file systems:
FAT16 | FAT32 | NTFS | |
---|---|---|---|
Maximum File Size | 2 32 - 1 bytes | 2 32 - 1 bytes | 2 64 - 1 KB |
Maximum Volume Size | 4 GB | 32 GB | 2 64 clusters |
Files Per Volume | 2 16 | 2 22 | 2 32 - 1 |
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