What is the number of bytes in one Gigabyte (GB)?

One Gigabyte (GB) is defined as 1,000,000,000 bytes. This measurement is based on the decimal (base-10) system commonly used in the context of storage devices and data capacities.

In the decimal system, data units increase by powers of ten, so 1 gigabyte is 1,000 megabytes (MB), and since each megabyte consists of 1,000,000 bytes, multiplying this gives you 1,000,000,000 bytes in one gigabyte. This is also aligned with the International System of Units (SI) definitions, where "giga" represents a billion (10^9) in terms of data measurement.

Other provided options reflect incorrect conversions or values for a gigabyte in this context; 1,000 bytes represents a different measurement, as does 1,000,000 bytes which equates to one megabyte. The option stating 1,000,000,000,000 refers to one terabyte (TB), which is a thousand gigabytes. Hence, understanding the definition and conversion of data units clarifies that the accurate representation of one gigabyte equals 1,000,000,000 bytes.