๐ Understanding GB to TB Conversion
Gigabyte (GB): Decimal 1 GB = 1,000,000,000 bytes; Binary 1 GiB = 1,073,741,824 bytes.
Terabyte (TB): Decimal 1 TB = 1,000,000,000,000 bytes; Binary 1 TiB = 1,099,511,627,776 bytes.
Conversion formulas:
โ Decimal: TB = GB รท 1,000 (since 1 TB = 1000 GB)
โ Binary: TiB = GiB รท 1,024 (often shown as TB in OS).
๐ Real-world examples
- 500 GB SSD = 0.5 TB decimal / 0.488 TB binary.
- 2,000 GB (2 TB) drive = 2.0 TB decimal / 1.907 TB binary (Windows shows ~1.81 TiB).
- 4,096 GB = 4.096 TB decimal / 4.0 TB binary.
- A 16 TB HDD array = 16,000 GB decimal, but formatted capacity ~14.55 TiB.
โ๏ธ Quick conversion table
| Gigabytes (GB) | Terabytes (TB) Decimal | Terabytes (TB) Binary |
|---|---|---|
| 1 GB | 0.001 TB | 0.0009765625 TB |
| 100 GB | 0.1 TB | 0.09765625 TB |
| 250 GB | 0.25 TB | 0.244140625 TB |
| 500 GB | 0.5 TB | 0.48828125 TB |
| 1,000 GB | 1.0 TB | 0.9765625 TB |
| 2,000 GB | 2.0 TB | 1.953125 TB |
| 4,000 GB | 4.0 TB | 3.90625 TB |
| 8,000 GB | 8.0 TB | 7.8125 TB |
| 16,000 GB | 16.0 TB | 15.625 TB |
โ Frequently Asked Questions
Why does my 1 TB drive show only 931 GB in Windows?
Manufacturers use decimal (1 TB = 1,000,000,000,000 bytes). Windows uses binary (1 TiB = 1,099,511,627,776 bytes), so 1 TB โ 0.909 TiB โ 931 GiB.
How to convert GB to TB mentally?
Decimal: divide by 1000 (move decimal three places left). Binary: divide by 1024 (approx 2.4% less than decimal).
Is 1024 GB equal to 1 TB?
In binary (IEC) terms, 1024 GiB = 1 TiB. In decimal terms, 1000 GB = 1 TB. Both are correct depending on context.
Which standard should I use?
Use decimal for storage capacity marketing (HDD, SSD, cloud). Use binary for file sizes in operating systems and RAM.