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Home > Quick Reference
File Size Conversion Table

The 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 uints 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 MeasurementDecimal MeasurementNumber 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
Last updated: November 9, 2003

Also see: Bit and Byte Conversion Calculator



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