How much money is there in the world? (in US ...

There is no simple answer to your question. The most common measure of the money in an economy is gross product, in this case gross world product.

Gross world product means the sum of the value of all the
goods and services produced in the world, including investments. The CIA (http://www.cia.gov/cia/publications/factbook/geos/xx.html) says that gross world product in 2000 was an estimated $43.6 trillion in U.S. dollars.

For an explanation of gross domestic product, the
country-level equivelant of gross world product, see
(http://www.pbs.org/wnet/moneyshow/mba/040601.html).

Most of that $43.6 trillion is not cash. Economists can estimate the amount of cash -- currency, checking accounts and traveler's checks with a statistic called the M1 money supply. Adding money in money market funds, savings accounts and small CDs gives us the M2 money supply. See http://www.howstuffworks.com/question237.htm.

I was unable to find a world figure for money supply; most economists are interested in how much its changing rather than the total number of trillions of dollars. The U.S. M1 money supply was $1.182 trillion in May 2002 (see http://www.stls.frb.org/fred/data/monetary/m1sl) and
the M2 money supply $5.543 trillion
(http://www.stls.frb.org/fred/data/monetary/m2sl).

http://answers.google.com/answers/threadview?id=34179

I think it is a hard question to answer since there is a huge amount of black capital/undeclared capital in the world.

What is paper compared to gold:

In 2006, all the gold in all the world is valued at about $3.5 trillion (wiki).

About 529 dollars! give or take few cents.

the anwser is there is more money than there really is money.  People lend, and accept as payment, money that is loaned that never really existed in the first place except as a number on a screen.   Due to this fact and various others there is no real anwser to that question.  Also the way interest works there could be debts that could total more that the actual money in the world anyways.

The amount of money is not fixed.  The amount changes every single day thanks to interest payments and the fractional reserve system.

Banks in the U.S. are only required to have about 10% of their deposits on hand at any particular time.  The other 90% is loaned out, which becomes "money" for someone else (seller of a house, car dealer, etc).  Then, that bank loans out 90% of that money, and the cycle continues...

Therefore, banks create money all the time.  Most other economies are based on this fractional reserve system as well. 

Gustur, you forgot the 00000000000000000000000

how much does  a  Gold bar cost ?

 Does that include what you presently have on your person and somewhere else in your home? If so I have no idea nor does anyone else since most if not all of us seldom if ever tell the truth about how much money they have.