## Number of GB in TB

**How many GB are there in one TB?**

**1,024.**

There are 1,024 gigabytes in one terabyte of electronic data. This is according to the definition of a terabyte from the American Heritage Science Dictionary. The prefix *tera* means one trillion or 10^{12},Ã‚ therefore a terabyte means roughly one trillion bytes, or to be accurate 1,099,511,627,776 or 2^{40} bytes.

This fact is verified on : April 10, 2010.