A billion is equal to how many million?

Answer 1

In the 'short scale' a billion is 1000 million. The short scale is the system officially used in the USA, the UK and most English-speaking countries.

In the 'long scale' it is a million million. More or less the rest of the world supposedly uses this terminology.

One million (1,000,000) or one thousand thousand.

One billion (1,000,000,000) or one million thousand.

bil·lion

n.1. The cardinal number equal to 109.

2. Chiefly British The cardinal number equal to 1012.