HD/CD-R/Flash Size Chart

MediaGiven SizeActual Size
HD120B112GB
HD160B149GB
HD200B186GB
HD250B232GB
CD-R4.7GB4.37GB/4482MB (=6.4x700MB CD-R)
Flash128MB122MB
Flash256MB244MB
Flash512MB488MB
Flash1GB953MB

Use the byte converter below to calculate the actual size of your hard drive. For example, if you have an 8.4 GB drive, enter 8400000000 (no commas) in the Byte field and press the button underneath to see how many Gigabyte it converts to.

Byte Kilobyte Megabyte Gigabyte

1 Byte = 8 Bit
1 Kilobyte = 1024 Bytes
1 Megabyte = 1024 Kilobytes = 1048576 Bytes
1 Gigabyte = 1024 Megabytes = 1073741824 Bytes


The Byte Converter by Malte Philipp