M0, M1, M2… let’s make it simple.
If we add up all countries’ nominal GDP (already measured in the same monetary unit: USD), we’ll get an accurate and simple idea of how much money is there in the world.
2. HOW MUCH MONEY IS THERE IN THE WORLD?
Taking and adding all the countries’ nominal GDP from the most recent IMF’s data, we get in the world there is aproximatelly $90 trillion USD.
Here you can see how all this money is wordly distributed: