1 gallon = 3.8 liters
1 gallon = 8.33 pounds
1 cubic meter = 264 U.S. gallons
1 cubic meter = 1,000 liters
1 cubic meter = 1 metric ton (2,200 pounds)
1 cubic foot = 7.48 gallons
1 cubic foot = 62 pounds
1 megaliter = 1,000,000 liters (1 million)
1 gigaliter = 1,000,000,000 liters (1 billion)
1 megaliter = 264,000 gallons
1 gigaliter = 264,000,000 gallons
1 acre-foot = 325,851 gallons
1 acre-foot = 1.2 megaliters
1 acre-foot = 7.48 gallons per square foot
Average daily water use per person in the U.S. = 99 gallons
Average daily water use per household in the U.S. = 262 gallons
Average daily per capita use in U.S. = 149 gallons
(Above usage figures as of 2005; for average per capita use, total water supplied by utilities divided by total population; excludes use by electric utilities and agriculture.)