Gallon to Pounds Calculator
Use this gallon to pounds calculator to convert US liquid gallons into pounds based on the liquid’s density.
How to Use the Gallon to Pounds Calculator
Enter the number of gallons and the liquid density to estimate weight in pounds.
Practical Example
One US gallon of water weighs about 8.34 lb under typical conditions, so 10 gallons weigh about 83.4 lb.
Factors That Affect the Result
Liquid density, temperature, concentration and whether US or imperial gallons are used can change the result.
Frequently Asked Questions
Do all liquids weigh the same per gallon?
No. Weight depends on density.
Is this for US gallons?
Use the unit option shown by the calculator and match it to your measurement.
Does temperature matter?
Yes. Density can change slightly with temperature.
Related Tools
Converting Gallons to Pounds
Gallons measure volume while pounds measure mass, so the conversion depends on the substance’s density. There is no single gallons-to-pounds factor that works for water, oil, fuel and other liquids.
Use the density at the relevant temperature and confirm whether the input uses US liquid gallons or another gallon definition. Water is often used for simple examples, but real materials can differ substantially. For shipping, dosing or industrial work, use the actual product density from a reliable specification rather than a generic assumption.