How do you convert billion units to million units?

Answer 1

A billion is a thousand-million.

Metric Units:

Deca - Ten

Hecto - Hundred

Kilo - Thousand

Mega - Million

Giga - Billion

Tera - Trillion

Many of the prefixes are uncommonly used. But, say, for example you had a billion grams (gigagram) and you wanted to convert it to megagrams, you would multiply it by 1000. So... one gigagram would be 1000 megagrams.

Now, it gets a little more complicated when one talks about computers.

Computers are based on factors of 2.

210 = 1024 which is the "standard" base for many computer calculations, especially those using metric prefixes.

So, a kilobyte would be 1024 bytes.

a megabyte is 1024 kilobytes, or 1024*1024 bytes = 1,048,576 bytes

a gigabyte is 1024 megabytes, or 1024*1024*1024 bytes = 1,073,741,824 bytes.

a terabyte is 1024 gigabytes, or 1024*1024*1024*1024 bytes = 1,099,511,627,776 bytes.