Gigabytes to Terabytes Converter
Convert gigabytes to terabytes and understand the difference between decimal (1000) and binary (1024) storage units.
Converting the other way? Use the Terabytes to Gigabytes Converter.
How to convert Gigabytes (GB) to Terabytes (TB)?
Note: Storage conversions are commonly shown using two standards: decimal (SI) and binary (IEC). That’s why GB→TB can look different in different tools.
- Decimal (SI): 1 TB = 1000 GB
- Binary (IEC): 1 TiB = 1024 GiB (often shown as “1024 GB per TB” in some tools)
This converter uses a 1024-based calculation as specified by the factor.
Formula (1024-based): Terabytes (TB) = Gigabytes (GB) ÷ 1024
Step-by-Step Calculation (1024-based)
- 1Take the number of Gigabytes (GB) you want to convert (e.g., 2048).
- 2Divide that value by 1024.
- 3The result is the value in Terabytes (TB). (Example: 2048 ÷ 1024 = 2 TB).
Decimal vs Binary: which one should you use?
Decimal (SI) is common in drive labels and storage plans:
- 1 TB = 1000 GB
- TB = GB ÷ 1000
Binary (IEC) is common in operating systems and some software:
- 1 TiB = 1024 GiB
- TiB = GiB ÷ 1024
Quick tip: If you want a result that matches provider/marketing labels, use 1000-based. If you want a result that matches binary calculations, use 1024-based (GiB→TiB).
Why does 1000 GB not equal 1 TB in some tools?
In decimal terms, 1000 GB = 1 TB. But in a 1024-based calculation, 1000 ÷ 1024 ≈ 0.9766 TB. This is one reason storage can appear “smaller” depending on how a device or app reports units.
Real-world use cases (storage plans, SSD sizes, backups)
- Storage plans: A “2 TB” plan often means 2000 GB in decimal terms.
- SSD sizing: If you have a 512 GB drive, converting to TB helps compare it to multi-terabyte options.
- Backups: Converting large totals (e.g., 3500 GB) to TB helps estimate how many terabytes of backup space you need.
How to use this converter?
Note: 1000 vs 1024
GB to TB Conversion Table (1024-based)
| Gigabytes (GB) Input | Terabytes (TB) Result |
|---|---|
| 256 GB | 0.2500 TB |
| 512 GB | 0.5000 TB |
| 1000 GB | 0.9766 TB |
| 1024 GB | 1.0000 TB |
| 1500 GB | 1.4648 TB |
| 2000 GB | 1.9531 TB |
| 2048 GB | 2.0000 TB |
| 3000 GB | 2.9297 TB |
| 5000 GB | 4.8828 TB |
| 10000 GB | 9.7656 TB |
Frequently Asked Questions
How do I convert GB to TB?
If you mean decimal labeling, divide GB by 1000 to get TB. If you’re using a 1024-based calculation, divide by 1024 (commonly aligned with GiB→TiB).
How many TB is 1000 GB?
In decimal terms, 1000 GB = 1 TB. Using a 1024-based calculation, 1000 ÷ 1024 ≈ 0.9766 TB.
How many TB is 1024 GB?
Using a 1024-based calculation, 1024 GB = 1 TB (more precisely: 1024 GiB = 1 TiB).
Why do some tools use 1000 instead of 1024?
1000 is the decimal (SI) standard used in marketing and many storage plans. 1024 is the binary (IEC) standard (GiB/TiB) often used by operating systems and technical tools.
Is this conversion exact?
It’s exact for the chosen factor. 1024-based conversions are exact in the binary system (GiB→TiB). Decimal labeling commonly uses 1000 (GB→TB).