What is the equivalent of a gigabyte in megabytes?

One gigabyte is equivalent to 1024 megabytes. This relationship is based on the binary system commonly used in computing, where data is organized in powers of two. In this context, 1 gigabyte is defined as 2^30 bytes, which is equal to 1024 megabytes (2^20 bytes). This is why the correct answer reflects that 1 gigabyte is indeed 1024 megabytes, making it the standard conversion used in computer science and information technology.