Gallons to Pounds Converter

Convert US gallons of water, milk, oil, fuel, or other liquids to pounds using the liquid's density. Water is about 8.34 pounds per gallon.

Weight

8.34 lb

Kilograms—

Weight per gallon—

Density used—

Weight of this volume by liquid

The same number of gallons weighs different amounts by liquid.

How it works

Weight equals volume times density. A US gallon is 3.78541 litres; multiplying by the liquid's density (in kg per litre) gives kilograms, which convert to pounds.

pounds = gallons × 3.78541 × density(kg/L) × 2.20462
Water: 1 gal ≈ 8.34 lb

Worked example

One gallon of water weighs 1 × 3.78541 × 1.0 × 2.20462 = 8.34 lb. A gallon of gasoline (density 0.737) weighs about 6.15 lb.

Frequently asked questions

How much does a gallon of water weigh?

About 8.34 lb.

How do I convert gallons to pounds?

Multiply gallons by the liquid's weight per gallon (density dependent).