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How many GB in 1 TB?
The answer is 1024.
We assume you are converting between gigabyte and terabyte.
You can view more details on each measurement unit:
GB or TB
The main non-SI unit for computer data storage is the byte.
1 byte is equal to 9.3132257461548E-10 GB, or 9.0949470177293E-13 TB.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between gigabytes and terabytes.
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You can do the reverse unit conversion from TB to GB, or enter any two units below:
A gigabyte is a unit of information or computer storage meaning approximately 1.07 billion bytes. This is the definition commonly used for computer memory and file sizes. Microsoft uses this definition to display hard drive sizes, as do most other operating systems and programs by default.
Since 1999, the IEC recommends that this unit should instead be called a "gibibyte" (abbreviated GiB). The difference between units based on SI and binary prefixes increases exponentially — in other words, an SI kilobyte is nearly 98% as much as a kibibyte, but a megabyte is under 96% as much as a mebibyte, and a gigabyte is just over 93% as much as a gibibyte. This means that a 500 GB hard disk drive would appear as "465 GB".
Most users prefer to convert units using the most common definition, so this site uses the non-SI form.
A terabyte (commonly abbreviated TB) is a measurement term for data storage capacity.
The number of bytes in a terabyte is sometimes stated to be approximately 1.0995 × 1012. This difference arises from a conflict between the long standing tradition of using binary prefixes and base 2 in the computer world, and the more popular decimal (SI) standard adopted widely both within and outside of the computer industry. Standards organizations such as IEC, IEEE and ISO recommend to use the alternative term tebibyte (TiB) to signify the traditional measure of 10244 bytes, or 1024 gibibytes.
The capacities of computer storage devices are typically advertised using their SI standard values, but the capacities reported by software operating systems uses the binary values. A NTFS formatted terabyte hard drive shows 931 gigabytes of free, usable storage space under Windows XP.
Most users prefer to calculate unit conversions using the binary definition, so this site uses non-SI units.
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