TB to GB Converter
Convert terabytes to gigabytes instantly using our digital storage conversion calculator.
TB to GB Conversion Reference Chart
Here is a quick reference chart showing how common file sizes in Terabytes (TB) convert into Gigabytes (GB), calculated in both standard binary (1024 bytes) and decimal (1000 bytes) formats:
| Terabytes (TB) | Gigabytes (GB) - Binary | Gigabytes (GB) - Decimal |
|---|---|---|
| 0.01 TB | 10.24 GB | 10 GB |
| 0.1 TB | 102.4 GB | 100 GB |
| 0.5 TB | 512 GB | 500 GB |
| 1 TB | 1,024 GB | 1,000 GB |
| 2 TB | 2,048 GB | 2,000 GB |
| 4 TB | 4,096 GB | 4,000 GB |
| 5 TB | 5,120 GB | 5,000 GB |
| 10 TB | 10,240 GB | 10,000 GB |
| 20 TB | 20,480 GB | 20,000 GB |
| 50 TB | 51,200 GB | 50,000 GB |
TB to GB Conversion Reference Chart
Use this quick reference chart to see how common file sizes in Terabytes (TB) convert into Gigabytes (GB), calculated in both binary and decimal formats.
About the TB to GB Converter
This is the reverse direction of GB to TB — starting from a large drive or plan's advertised capacity and breaking it down into GB, the unit most individual files and folders are actually measured in. It's the calculation behind questions like "how much space do I actually have left" once you know how many GB of a TB-rated drive are already in use.
Why This Conversion Comes Up So Often
Understanding what a "1TB" or "2TB" drive really holds.
Drive manufacturers advertise capacity in decimal TB (1 TB = 1,000 GB), but your operating system reports usable space in binary GB (1 TB = 1,024 GB) — this converter shows both figures so you know what to actually expect.
Splitting a large drive's capacity across projects or backups.
If you're allocating space on a shared or archive drive, converting the total TB capacity into GB makes it far easier to divide realistically among multiple folders, projects, or backup sets.
Frequently Asked Questions
How many GB are in 1 TB?
Exactly 1,024 GB in the binary system used by operating systems, or 1,000 GB in the decimal system used by storage manufacturers — the gap is why a "1TB" drive shows roughly 931 GB of usable space in your file explorer.
Why does my new hard drive show less than the advertised capacity?
The drive is labeled using decimal TB (1,000 GB per TB), but your OS reports it in binary GB (1,024 GB per TB) — combined with a small amount of space reserved for formatting, this explains the visible gap.
Can this tool convert an actual file?
This calculator converts numbers. To shrink a real file to a specific target size, use our Compress Image tool.