There are 7.48 gallons in a cubic foot. 300,000 gallons divided by 7.48 gallons/cubic foot equals 40106.95 cubic feet.
5 gallons = 0.668 cubic feet.
13 US gallons = 1.73784722 cubic feet[Google "13 gallons into cubic feet"]
500 Gallons (US) equals 66.84 cubic feet
32 cubic feet equates to 239.377 gallons.
2,000 cubic feet equals: 14,960 US liquid gallons.
280 gallons equals 37.43 cubic feet.
20 US gallons is about 2.7 (2.67361) cubic feet.
12,000 US gallons = 1,604.17 cubic feet.
279 gallons = 37.3 cubic feet.
1,578,943 (cubic feet) = 11,811,313.9 US gallons
89.76 gallons.