Stock futures are falling as investors worry that China might try to curb its surging economy to combat inflation.

Major Chinese indexes have tumbled Friday amid worries the government might raise interest rates to combat mounting inflation.

Cooling China's economy could have an impact worldwide because the country's robust economy has helped offset sluggish growth in places like the U.S. Many companies have credited international sales, particularly in China, as a reason earnings have been strong.

Dow Jones industrial average futures are down 63, or 0.6 percent, at 11,179. S&P 500 futures are down 8, or 0.7 percent, at 1,203, while Nasdaq 100 futures are down 16, or 0.7 percent, at 2,157.