How can calculate 1 megabyte equals 1048576 bytes?

1 megabyte (MB) is calculated as 2 raised to the power of 20, which equals 1,048,576 bytes. This is based on the binary system, where 1 kilobyte (KB) equals 1,024 bytes (2^10). Therefore, 1 MB equals 1,024 KB, and since each KB is 1,024 bytes, multiplying 1,024 by 1,024 gives you 1,048,576 bytes.