How to convert terabytes to tebibytes
- Take the value in terabytes.
- Use the formula tebibytes = terabytes × 0.9094947018.
- For example, 1 TB is 0.909 TiB.
About terabytes and tebibytes
A terabyte (TB) is 1,000,000,000,000 bytes. A tebibyte (TiB) is 1,024⁴ = 1,099,511,627,776 bytes, about 10% more. Multiply TB by 0.909495 to get TiB. That is why a drive sold as 2 TB shows as about 1.82 TB in Windows: the bytes are all there, but Windows counts in TiB and labels them TB.
The gap grows with each prefix, from 2.4% for KB to 4.9% for MB, 7.4% for GB and 9.95% for TB. At terabyte sizes the shortfall is large enough to matter when planning a NAS, a RAID array or a cloud volume, where tools such as Linux, ZFS and many cloud consoles show sizes in TiB.
Examples
- 1 TB (a drive sold as 1 TB) is 0.909 TiB
- 2 TB (a 2 TB external drive) is 1.82 TiB
- 4 TB (a 4 TB NAS drive) is 3.64 TiB
- 16 TB (a 16 TB hard drive) is 14.55 TiB
Terabytes to tebibytes chart
| Terabytes (TB) | Tebibytes (TiB) |
|---|---|
| 0.25 | 0.227 |
| 0.5 | 0.455 |
| 1 | 0.909 |
| 1.5 | 1.36 |
| 2 | 1.82 |
| 3 | 2.73 |
| 4 | 3.64 |
| 5 | 4.55 |
| 6 | 5.46 |
| 8 | 7.28 |
| 10 | 9.09 |
| 12 | 10.91 |
| Terabytes (TB) | Tebibytes (TiB) |
|---|---|
| 14 | 12.73 |
| 16 | 14.55 |
| 18 | 16.37 |
| 20 | 18.19 |
| 22 | 20.01 |
| 24 | 21.83 |
| 28 | 25.47 |
| 32 | 29.1 |
| 40 | 36.38 |
| 48 | 43.66 |
| 64 | 58.21 |
| 100 | 90.95 |