ganak.appTB to GB Converter
Convert terabytes to gigabytes instantly. Free TB to GB converter with binary (1024) and decimal (1000) standards for storage and backup planning.
1 KB = 1,024 bytes — used by OS, RAM, file sizes
1 TB =
1,024GB
Standard: Binary (1 KB = 1,024 B)
All Units
1 TB in every unit (binary)
Binary vs Decimal
Why your hard drive shows less space
Difference: 9.1% — this is why a "1 TB" drive shows ~931 GB in your OS
Transfer Time
Estimated time to transfer 1 TB
How to Convert Terabyte to Gigabyte
Formula with a worked example (binary (1024))
To convert terabyte (TB) to gigabyte (GB), use this formula:
GB = TB × 1,024 (binary) or TB × 1,000 (decimal)Example: Convert 2 TB to GB (binary (1024))
2 TB = 2,048 GBTo convert back, use: TB = GB ÷ 1,024 (binary) or GB ÷ 1,000 (decimal)
Terabyte to Gigabyte Conversion Table
Quick reference (binary (1024))
| TB | GB |
|---|---|
| 0.001 TB | 1.024 GB |
| 0.01 TB | 10.24 GB |
| 0.1 TB | 102.4 GB |
| 0.5 TB | 512 GB |
| 1 TB | 1,024 GB |
| 2 TB | 2,048 GB |
| 5 TB | 5,120 GB |
| 10 TB | 10,240 GB |
| 50 TB | 51,200 GB |
| 100 TB | 102,400 GB |
Binary vs Decimal: Which Standard?
Why 1 TB can have two different values in GB
There are two ways to define how many gigabyte are in a terabyte:
Binary (1024-based)
1 TB = 1,024 GB
Used by: OS, RAM, file sizes
Decimal (1000-based)
1 TB = 1,000 GB
Used by: HDD/SSD manufacturers, networks
Fun fact: A 1 TB drive shows as ~931 GB in your OS due to the binary vs decimal measurement difference.
When Do You Need TB to GB?
Common scenarios where this conversion comes in handy
checking actual drive capacity
backup size estimation
cloud storage migration
data center planning
Frequently Asked Questions
Common questions about converting terabyte to gigabyte
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Last updated Mar 24, 2026