Symbols, abbreviations, or full names for units of length,Īrea, mass, pressure, and other types. You can find metric conversion tables for SI units, as wellĪs English units, currency, and other data. Most users prefer to calculate unit conversions using the binary definition, so this site uses non-SI units.Ĭonversion calculator for all types of measurement units. A NTFS formatted terabyte hard drive shows 931 gigabytes of free, usable storage space under Windows XP.
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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. Standards organizations such as IEC, IEEE and ISO recommend to use the alternative term tebibyte (TiB) to signify the traditional measure of 1024 4 bytes, or 1024 gibibytes. 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. Most users prefer to convert units using the most common definition, so this site uses the non-SI form.Ī terabyte (commonly abbreviated TB) is a measurement term for data storage capacity. This means that a 500 GB hard disk drive would appear as "465 GB". 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. Since 1999, the IEC recommends that this unit should instead be called a "gibibyte" (abbreviated GiB). Microsoft uses this definition to display hard drive sizes, as do most other operating systems and programs by default.
This is the definition commonly used for computer memory and file sizes. ›› Common computer data storage conversionsĪ gigabyte is a unit of information or computer storage meaning approximately 1.07 billion bytes. TB to GB, or enter any two units below: Enter two units to convert From: You can do the reverse unit conversion from
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