pounds is a measurement of weight. gallon is a measurement of volume
1 Us Gallon is = 7.149 pounds
About 7 pounds (it's lighter than water).
If you are asking about diesel fuel, one gallon of diesel fuel weighs about 7 pounds.That's the American gallon, a British gallon of diesel would weigh about 8 pounds.
Each gallon of Diesel Fuel makes 22.2 pounds of CO2
That is approximately 7.3 pounds
Number 2 or red diesel weighs 8.33 pounds per gallon. It is slightly heavier than water which weighs 8.13 pounds per gallon.
20 US gallons of diesel is approximately 143 pounds
2.8 DIESEL to the gallon
The density of petroleum diesel fuel is about 0.85 kilograms per litre (7.09 pounds per gallon).
About 7.15 pounds. The density of No. 2 diesel fuel is 850 grams/liter = 1.874 pounds/liter = 7.15 pounds per US gallon. Regular gasoline is considerably less dense coming in at 6.0 to 6.3 pounds per gallon.
maybe 10000 A gallon of water weighs 10 pounds. The density of diesel is less thyan water, so let's say a gallon of diesel weighs about 9 pounds. That's about 4 kilograms. Check some conversion tables and density tables if you need to know exactly, but your answer will be around 4 kilos.
I included to related links. It is about 7.1 pounds per gallon, so if you know the pounds, then multiply by 0.1408 to get gallons. This isn't exact, as diesel fuel will vary. One link suggests a good range is 7.1 to 7.3 pounds per gallon.