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File Size Conversion Table

Giga, mega, tera, kilo? What do they mean? Use this quick reference chart to compare computer data file sizes.

The file size conversion table below shows the relationship between the file storage sizes that computers use. Binary calculations are based on units of 1,024, and decimal calculations are based on units of 1,000. It should be noted that decimal calculations are based on units that have been rounded off to the nearest 1,000 and therefore differ from the actual number of bytes used in binary calculations.

NameSymbolBinary
Measurement
Decimal
Measurement
Number of BytesEqual to
kilobyteKB2^1010^31,0241,024 bytes
megabyteMB2^2010^61,048,5761,024KB
gigabyteGB2^3010^91,073,741,8241,024MB
terabyteTB2^4010^121,099,511,627,7761,024GB
petabytePB2^5010^151,125,899,906,842,6241,024TB
exabyteEB2^6010^181,152,921,504,606,846,9761,024PB
zettabyteZB2^7010^211,180,591,620,717,411,303,4241,024EB
yottabyteYB2^8010^241,208,925,819,614,629,174,706,1761,024ZB









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