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.
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.
5 Gallons of Jet A is 30 pounds
42 gallons of water is 350.7 pounds
convert 20,000 gallons to pounds
800 pounds of water would be 95.8 US gallons.
10 US gallons is approximately 83.5 pounds
30 pounds of water is 3.593 gallons.
About 250.5 pounds for 30 US gallons.
10 gallons of water is 83.5 pounds
20 gallons of water weighs 167 pounds.
Imperial gallons can't be converted to pounds. Imperial gallons measure volume, while pounds measure mass.