GB to TB Converter
Convert gigabytes to terabytes and back. Type a value, pick the direction, and read the result. Built for large drives and cloud storage figures.
Enter an amount and pick the direction.
In decimal units, 1 TB is 1000 GB. A 1 TB drive reads about 931 GiB on systems that count in binary. The bytes are all there, just counted in a different base.
How It Works
Enter a number, then choose GB to TB or TB to GB. The result appears as you type.
In decimal terms, 1 TB is 1000 GB. So 500 GB is 0.5 TB, and 2 TB is 2000 GB.
This matters most for big drives and cloud plans, where the gap between decimal and binary counts gets large enough to notice.
The Formula
To go from GB to TB, divide by 1000. So 1500 GB is 1.5 TB.
To go from TB to GB, multiply by 1000. So 4 TB is 4000 GB.
A 1 TB drive holds 1000 GB by the decimal label. In binary, that same drive reads about 931 GiB, which is why it looks short.
Worked Example
You bought a 1 TB external drive and your computer shows roughly 931 GB.
The label uses decimal: 1 TB is 1000 GB. Your system uses binary, where 1 TiB is 1024 GiB.
Nothing is missing. The 1,000,000,000,000 bytes are all there, just counted in a different base.
Common Uses
- Comparing external drives sold in TB against system readings in GB.
- Sizing a cloud backup plan quoted in TB.
- Adding up several GB drives to see the total in TB.
- Checking whether a 2 TB plan covers a library measured in GB.