Gallons to Pounds Converter

Convert from US gallons or UK gallons to pounds for a variety of different liquids, such as water, milk, gasoline and oil.

Disclaimer: Whilst every effort has been made in building this calculator, we are not to be held liable for any damages or monetary losses arising out of or in connection with the use of it. This tool is here purely as a service to you, please use it at your own risk. Full disclaimer. Do not use calculations for anything where loss of life, money, property, etc could result from inaccurate calculations.

How many pounds in a gallon?

The weight of a gallon of liquids such as milk, gasoline, liquid propane or beer is dependent upon the density of the liquid in question. And the density of a liquid can often depend upon the temperature at which it is being stored. To give a simple explanation, a gallon of water at room temperature will weigh less than a gallon of honey (because honey is a denser substance).

When making a conversion, it's important to remember that the US gallon is smaller than the imperial (UK) gallon. In the US, a gallon is equivalent to 128 fluid ounces. But, in the UK an imperial gallon is bigger at 160 fluid ounces.

With the above in mind, let's look at some approximation conversions from gallons to pounds for various liquids.

U.S. Gallons to pounds for different liquids
Liquid (1 gallon) Density (g/ml) Weight (lb)
Water0.998 g/ml8.329 pounds
Beer1.01 g/ml8.429 pounds
Cider1.007 g/ml8.404 pounds
Crude Oil0.915 g/ml7.636 pounds
Diesel (fuel)0.85 g/ml7.094 pounds
Gasoline (petrol)0.737 g/ml6.152 pounds
Honey1.42 g/ml11.85 pounds
Ice Cream0.56 g/ml4.673 pounds
Jet Fuel0.804 g/ml6.71 pounds
Milk1.035 g/ml8.637 pounds
Olive oil0.92 g/ml7.678 pounds
Orange juice1.038 g/ml8.663 pounds
Paint1.198 g/ml9.998 pounds
Propane (liquid)0.493 g/ml4.114 pounds
Wine0.99 g/ml8.262 pounds

How much does a gallon of milk weigh?

A US gallon of milk weighs approximately 8.637 pounds, a quart weighs 2.16 pounds and a pint weighs 1.08 pounds. These weights are based upon a milk density of 1.035 g/ml.

Weighing gallons of water

The precise weight of water varies according to its density, which in turn depends on its storage temperature. You can find out more in our article how much does a gallon of water weigh?

Densities of liquids

It's important to note that the density (mass per unit volume) of a liquid can vary depending upon many factors. These include the ingredients within the liquid, the processing method and how it is subsequently stored. Many of the ingredient densities referenced within this converter and page come from the FAO / INFOODS Database (version 2).

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