How Much Does a Gallon of Gas Weigh? (2022)

How Much Does a Gallon of Gas Weigh

If you’re wondering how much does a gallon of gas weigh, then this guide will help you. Ensuring that you always have gas reserves is critical, especially if traveling by boat. By doing so, you are guaranteed that you’ll not get stuck because you don’t have gas.

While it might be ideal, carrying or having too much gas at any given time is risky. You need to have just the right amount to handle the weight and minimize safety risks. It is with this that many people wonder: how much does a gallon of gas weigh? Below you’ll get an answer to this question.


How Much Does a Gallon of Gas Weigh?

Gallon of Gas Weigh

While there is no definitive figure, the Science and Technology Desk Reference gives us an average figure. Based on the information they’ve made public, a United States gallon of gas weighs 6.1 pounds, and an Imperial Gallon weighs 7.2 pounds.

  • United States Gallon of Gas: 6.1 lbs
  • Imperial Gallon of Gas: 7.2 lbs

If you are yet to get your pounds in order or have a challenge doing so, here is a quick comparison with other substances to give you an idea of how much a gallon of gas weighs. Of course, a perfect way to start is by looking at a gallon of water and gas.

A gallon of water is heavier than a gallon of gas, given that it weighs more than 2 pounds heavier. Water weighs in at around 8.4 pounds. And in case you’ve never understood why, this is why gas floats on water.

While water is heavier, diesel is not. Simply put, gas is heavier than diesel by slightly more than a pound. A gallon of diesel weighs around 7.1 pounds. This is due to two things molecules and density. Compared to diesel, gas has a higher density and larger molecules.

As with other petroleum products, it is good to note that other external factors might impact overall weight. Therefore, it is good to keep such factors in mind when answering questions like how much a gallon of gas weighs.

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