Terabytes to gigabytes converter
Convertersconversion pair
Convert terabytes to gigabytes instantly: 1 TB is 1,000 GB. Storage, drives and backups, with the exact math and one-click copying.
a terabyte is 1,000 GB — the drive that shrinks when you open it.
work surface
Math, not advice — results are indicative. Read the disclaimer.
pro tips
Multiply by 1,000: 0.5 TB is 500 GB.
A "1 TB" drive is 1,000 GB advertised, about 931 GiB on screen.
When budgeting storage, always ask whether the number is decimal or binary.
what it does
One terabyte is 1,000 gigabytes. Multiply terabytes by 1,000 and the gigabytes appear, which is how a storage tier becomes a number you can compare against your actual files.
It shows up when a cloud plan offers "2 TB" and you want gigabytes to budget, when a drive is advertised in terabytes but partitioned in gigabytes, when a backup policy is written in TB and monitored in GB, and in any capacity conversation between marketing and reality.
The shortcut: 1 TB is 1,000 GB, 0.5 TB is 500 GB, 4 TB is 4,000 GB — or 3,725 GiB in binary, the reason a "4 TB" drive reports about 3.6 TB of usable space. The bigger the number, the louder the discrepancy.
Type any terabyte value and the widget answers in gigabytes instantly, with the math on screen. Click to copy, and swap when a gigabyte figure has to be rolled up into terabytes.
quick answers
How many gigabytes are in a terabyte?
1,000 decimal, 1,024 binary.
Why does my 1 TB drive show less?
Because the OS counts in binary powers while the label used decimal. Same drive, two systems.
Why convert terabytes to gigabytes?
Because services quote terabytes while file managers and quotas work in gigabytes.