HDD Sizing

Various Drive Sizes and their Binary and Decimal Capacities

Drive Size Approximate Total Bytes Decimal Capacity
(bytes/1,000,000,000)
Approximate Binary Capacity (bytes/1,073,724,841)
10 GB___ 10,000,000,000__ 10_ GB___ 9.31 GB
20 GB___ 20,000,000,000__ 20_ GB__ 18.63 GB
30 GB___ 30,000,000,000__ 30_ GB__ 27.94 GB
36 GB___ 36,000,000,000__ 36_ GB__ 33.53 GB
40 GB___ 40,000,000,000__ 40_ GB__ 37.25 GB
60 GB___ 60,000,000,000__ 60_ GB__ 55.88 GB
74 GB___ 74,000,000,000__ 74_ GB__ 68.91 GB
80 GB___ 80,000,000,000__ 80_ GB__ 74.51 GB
100 GB_ 100,000,000,000_ 100_ GB__ 93.13 GB
120 GB_ 120,000,000,000_ 120_ GB_ 111.76 GB
150 GB_ 150,000,000,000_ 150_ GB_ 139.69 GB
160 GB_ 160,000,000,000_ 160_ GB_ 149.01 GB
180 GB_ 180,000,000,000_ 180_ GB_ 167.64 GB
200 GB_ 200,000,000,000_ 200_ GB_ 186.26 GB
250 GB_ 250,000,000,000_ 250_ GB_ 232.83 GB
300 GB_ 300,000,000,000_ 300_ GB_ 279.40 GB
320 GB_ 320,000,000,000_ 320_ GB_ 298.02 GB
400 GB_ 400,000,000,000_ 400_ GB_ 372.52 GB
500 GB_ 500,000,000,000_ 500_ GB_ 465.65 GB
1 TB (1000 GB) 1,000,000,000,000_ 1 TB (1000 GB) 931.30 GB