1 terabyte (1000⁴) = 1 000 GB
1 TB = 1 000 GB · type math like (12*4)+6.5
TB to GB is used when buying hard drives, SSDs and cloud plans. It also explains why a new drive appears smaller on your computer than on the box.
Video production is a big consumer of storage. 4K footage at 100 Mbps uses about 45 GB per hour, so a 2 TB drive holds about 44 hours of footage. Professional formats like ProRes can use over 300 GB per hour.
Gaming consoles and PCs show storage in both. A 1 TB console has about 825 GB usable on some models after the system software. Modern games often need 100–150 GB each.
Cloud plans also use TB. A 2 TB Google One or iCloud plan is 2,000 GB, and backups for a family can fill that quickly with photos and videos.
When comparing SSDs, the advertised TB figure includes all bytes, but some space is reserved for over-provisioning and firmware. A 1 TB SSD often shows about 931 GiB in Windows and slightly less usable after formatting. That does not mean the drive is faulty.
Enterprise storage quotes raw and usable capacity. A server with twelve 8 TB drives has 96 TB, or 96,000 GB, of raw capacity, but RAID and spare drives reduce usable space.
Home media servers often use multiple drives. A 4 TB drive holds 4,000 GB, enough for about 800 HD movies at 5 GB each, or around 200 4K movies at 20 GB each. Plex and similar apps report library sizes in GB, so converting helps plan for growth.
Mobile data plans in some countries now offer TB-level allowances for home broadband, such as 1 TB per month. That is 1,000 GB, roughly 330 hours of HD streaming at 3 GB per hour.
Video game libraries are large too. With modern games at 100 GB each, a 2 TB console expansion card holds about 20 games.
A quick check: the GB figure should be exactly 1,000 times the TB figure, so 0.5 TB is 500 GB and 8 TB is 8,000 GB. If you see 7,450 for 8 TB, that is the binary GiB value your operating system shows, not an error. Keep the decimal figure for comparing shop listings, because every drive maker labels capacity that way.
GB = TB × 1 000
Reverse: 1 GB = 0.001 TB.
A 2 TB drive shows less space in Windows. How much should it show?
Answer: 2 TB = 2,000 GB, shown as 1,862.6 GB (GiB) in Windows.
| TB | GB |
|---|---|
| 1 TB | 1 000 GB |
| 2 TB | 2 000 GB |
| 3 TB | 3 000 GB |
| 4 TB | 4 000 GB |
| 5 TB | 5 000 GB |
| 6 TB | 6 000 GB |
| 7 TB | 7 000 GB |
| 8 TB | 8 000 GB |
| 9 TB | 9 000 GB |
| 10 TB | 10 000 GB |
| 11 TB | 11 000 GB |
| 12 TB | 12 000 GB |
| 13 TB | 13 000 GB |
| 14 TB | 14 000 GB |
| 15 TB | 15 000 GB |
| TB | GB |
|---|---|
| 16 TB | 16 000 GB |
| 17 TB | 17 000 GB |
| 18 TB | 18 000 GB |
| 19 TB | 19 000 GB |
| 20 TB | 20 000 GB |
| 25 TB | 25 000 GB |
| 30 TB | 30 000 GB |
| 40 TB | 40 000 GB |
| 50 TB | 50 000 GB |
| 75 TB | 75 000 GB |
| 100 TB | 100 000 GB |
| 250 TB | 250 000 GB |
| 500 TB | 500 000 GB |
| 1 000 TB | 1 000 000 GB |
A 2 TB drive holds 2,000 GB.
A 1 TB plan is 1,000 GB.
Four 4 TB drives total 16,000 GB before RAID.
Windows divides by 1,024³. 2 TB shows as 1,862.6 GB (really GiB).
RAID 5 across four 4 TB drives leaves 12 TB usable.
That is TiB to GiB, not TB to GB.
A terabyte (TB) is 1,000,000,000,000 bytes, or 1,000 GB.
Origin. Consumer hard drives first reached 1 TB in 2007.
Used today. Hard drives, SSDs, NAS systems and cloud backup.
A gigabyte (GB) is 1,000,000,000 bytes, using the decimal SI prefix giga.
Origin. Decimal prefixes for storage became standard in the hard drive industry in the 1980s and were confirmed by the IEC in 1998.
Used today. Smaller storage and file sizes.
1,000 GB.
Windows reports binary GiB. 1 TB is 931.3 GiB.
Yes. Since 2009 macOS uses decimal units, so 1 TB shows as 1 TB.
About 200 at 5 GB each.