That depends on the type material you are referring to. Please edit your question to include more context or details.
300 US gallons = 1135 liters = 1135 kilograms = 2502 pounds. 300 UK gallons = 1363 litres = 1363 kilograms = 3005 pounds.
800 pounds of water would be 95.8 US gallons.
convert 20,000 gallons to pounds
42 gallons of water is 350.7 pounds
5 Gallons of Jet A is 30 pounds
18 kilograms is 40 pounds. You can go to Google and type in anything to change it from kilograms to pounds or cups to gallons etcetera.
10 US gallons is approximately 83.5 pounds
50 gallons of plain water weighs about 417 pounds.
Nine US gallons of water weighs about 75.15 pounds.
30 pounds of water is 3.593 gallons.
10 gallons of water is 83.5 pounds
20 gallons of water weighs 167 pounds.