Which is the correct conversion of a gigabyte?

A gigabyte is correctly defined as 1,000 megabytes. This aligns with the international metric system, where data measurement follows a binary or decimal approach. In decimal terms, a gigabyte equals 1,000 megabytes, as it’s based on powers of ten. This definition is widely used in various contexts such as data storage, computer memory, and network speeds.

The other options present conversions that do not accurately reflect the size of a gigabyte. For instance, a gigabyte is equivalent to approximately 1 billion bytes in the decimal system, rather than 1 million bytes. Furthermore, a gigabyte is much smaller than 1 trillion bytes since that would be a terabyte. Lastly, stating that a gigabyte equals 1,000 terabytes is significantly misleading, as a terabyte is a larger unit than a gigabyte, with one terabyte being equal to 1,000 gigabytes. Thus, understanding these standard conversions is crucial for accurately interpreting data sizes in technology and computing.