HDD Usable Space Calculator – Check Real vs. Claimed Capacity
Here’s a table showing capacities from 1TB to 22TB and the corresponding available space considering binary units (1 TB = 1024 GB):
| Capacity (TB) | Available Space (TB) |
|---|---|
| 1 | 0.91 |
| 2 | 1.82 |
| 3 | 2.73 |
| 4 | 3.64 |
| 5 | 4.55 |
| 6 | 5.46 |
| 7 | 6.37 |
| 8 | 7.28 |
| 9 | 8.19 |
| 10 | 9.10 |
| 11 | 10.01 |
| 12 | 10.92 |
| 13 | 11.83 |
| 14 | 12.74 |
| 15 | 13.65 |
| 16 | 14.56 |
| 17 | 15.47 |
| 18 | 16.38 |
| 19 | 17.29 |
| 20 | 18.20 |
| 21 | 19.11 |
| 22 | 20.02 |
Please note that the “Available Space” values are calculated using the binary definition of units, where 1 TB = 1024 GB. In practice, manufacturers often use decimal units, where 1 TB = 1000 GB, which can lead to some discrepancies in reported capacities.
Price Per TB ttol here:

