How it's calculated
lb = gallons × k (reverse: gallons = lb ÷ k)
gallons = US liquid gallons, lb = pounds, k = pounds per US gallon of the liquid (water ≈ 8.345).
Common values
| Liquid | Pounds per US gallon |
|---|---|
| Water | 8.345 |
| Gasoline | 6.20 |
| Diesel | 7.10 |
| Milk | 8.64 |
Common questions
How much does a gallon of water weigh?
A US gallon of water weighs about 8.345 pounds. The UK imperial gallon holds more, around 10.02 pounds.
Why does gasoline weigh less than water?
Gasoline is less dense than water, roughly 0.74 times, so the same volume weighs less. Each liquid in the tool has its own density.