A cubic foot of gold weighs approximately 1,206 pounds. A cubic inch of gold weighs approximately 0.7 pounds. Gold is a dense, heavy metal, and if a 1-gallon milk container was filled with gold, it would weigh about 161 pounds.
A standard bar of gold as held in the United States Mint measures 7 inches long by 3 5/8 inches wide by 1 3/4 inches tall and weighs approximately 400 ounces or 27.5 pounds. In the 21st century, the U.S. Mint held a maximum of 649.6 million ounces of gold in 1941. As of 2014, it had gold holdings of 147.3 million ounces, according to About.com.