LP gas and propane are essentially the same because propane is a form of LP gas. While all propane is LP gas, not all LP gas is propane. LP gas is a crude oil product made of propane, butane and isobutane. Propane does not include any other gases. In the U.S., it’s common to call LP gas “propane” since “LP gas” is not common terminology.

There is no significant difference between liquid propane and propane gas. In fact, the terms propane gas, liquid propane, LPG, or simply propane, are used interchangeably. They all refer to the same substance. The only thing that is different is its physical state. Just like water and ice cubes are, at their core, the same thing.

Generally, propane and liquefied petroleum gas (LPG) mean the same thing. However, the latter can contain butane and isobutane, in addition to propane. All are flammable hydrocarbon gases with the same chemical formulae categorized as LPG. The slight difference is that LPG contains propane, but propane is one of the LP gases.

So referring to LPG as propane is accurate – they’re one and the same thing. In the United States, the name LPG isn’t in common use. Americans just call it propane.