15 pounds equals how many gallons?

Answer 1

That depends on the type material you are referring to. Also, these are two different types of measurements. Gallons is a measure of volume but the other is weight or mass. Please edit your question to include more context or details.

Answer 2

The number of gallons in 15 pounds would depend on the substance being measured, as the conversion between pounds and gallons varies depending on density. To convert pounds to gallons, you need to know the density of the substance in question.

Answer 3

The volume of the unit is gallons and pounds the weight of these two measured by Rob Gelphman.