Gigabytes to Terabytes Converter
1 gigabyte = 0.001 terabytes.
Enter a value
Result
1 gigabyte =
0.001 TB
1 GB × 0.001 = 0.001 TB
Decimal units count in 1,000s; binary units (KiB, MiB, GiB) count in 1,024s
The working
- 1. Convert 1 GB to bytes: 1 × 1,000,000,000 = 1,000,000,000.
- 2. Convert to TB: 1,000,000,000 ÷ 1e12 = 0.001.
1 GB in every unit
Why a drive shows less than advertised
- A 500 GB drive shows as
- ≈ 465.7 GiB
- MP3 song
- ≈ 4 MB
- Phone photo
- ≈ 3 MB
- HD film
- ≈ 4 GB
Conversion table
Gigabytes to Terabytes
| Gigabytes | Terabytes |
|---|---|
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 750 | 0.75 |
| 1,000 | 1 |
| 2,000 | 2 |
| 4,000 | 4 |
| 8,000 | 8 |
Terabytes to Gigabytes
| Terabytes | Gigabytes |
|---|---|
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 750 | 750,000 |
| 1,000 | 1,000,000 |
| 2,000 | 2,000,000 |
| 4,000 | 4,000,000 |
| 8,000 | 8,000,000 |
Formula and worked example
terabytes = gigabytes × 0.001.
Convert 500 gigabytes to terabytes: 500 × 0.001 = 0.5 TB.
When you need this
Comparing drive and cloud storage plans, which are often sold in terabytes, with the gigabytes your files use.
Questions people ask
How many terabytes are in a gigabyte?
One gigabyte is 0.001 terabytes.
How do I convert gigabytes to terabytes?
Multiply the number of gigabytes by 0.001, or divide by 1,000.
What is 1,000 GB in TB?
1,000 gigabytes is 1 terabyte.
How do I convert terabytes back to gigabytes?
Multiply by 1,000: one terabyte is 1,000 gigabytes.
Related conversions
How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it. Source: NIST Special Publication 811, Guide for the Use of the International System of Units.
Spotted a mistake? Tell us and we'll check it. How we check our calculators