In 1 terabytes there are 1,000 gigabytes. Meanwhile in 1 gigabytes there are 0.001 terabytes. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Gigabytes to Terabytes calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert terabytes (TB) to gigabytes (GB), multiply the TB value by 1,000.
Example:
In most computer storage, 1 terabyte (TB) equals 1,024 gigabytes (GB). This uses the base-2 system (binary) that many operating systems use for file sizes.
Some brands also use a base-10 system where 1 TB equals 1,000 GB. This can make a drive look smaller in your computer.
Both can be correct, based on the standard used:
Storage makers often use 1,000, while many computers report sizes closer to 1,024.
TB is usually a decimal unit, while TiB is a binary unit:
If you want a strict binary label, TiB (tebibyte) is the clearer unit.
A few things cause this:
As a result, a “1 TB” drive may show around 931 GB in some views.
Use one of these formulas:
Pick the one that matches how your device or label reports storage.
Here are common conversions using the binary standard (1 TB = 1,024 GB):
Using the decimal standard (1 TB = 1,000 GB):
Using the binary standard:
Using the decimal standard:
A terabyte is bigger than a gigabyte.
Yes. Data plans and internet usage often use GB and TB. Many providers use decimal units, so 1 TB may mean 1,000 GB on a bill or plan.
Your device may still show data sizes in a different way, so totals can look slightly off.
No. The data stays the same. Only the unit and reporting standard changes. The same file can show a different size depending on whether a system uses 1,000 or 1,024 as the base.
Use the same standard across your comparison:
If you’re checking free space, stick to what your device uses for display.
The Calculate Box tool to convert terabytes to gigabytes uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a terabytes value in the box and have it instantly converted to gigabytes.