How Much Does A Fart Weigh?

Have you ever wondered about the weight of a fart? It’s a question that might sound amusing, yet it holds a curious scientific interest. Can a fart, something so ephemeral and fleeting, actually have a measurable weight?

Let’s delve into this intriguing topic and uncover the facts.

The Composition of a Fart

Before we can determine the weight of a fart, it’s important to understand what it’s made of. Farts are composed mostly of nitrogen, hydrogen, carbon dioxide, methane, and oxygen.

These gases are produced as by-products of the digestive process, where the body breaks down food into nutrients.

Measuring the Weight

The idea of measuring a fart’s weight might seem straightforward – step on a scale, fart, and see if there’s a change. However, the reality is a bit more complex. The gases that make up a fart are incredibly light and diffuse quickly into the air. This makes it nearly impossible to measure a fart’s weight using a regular bathroom scale.

Scientific Insights

Scientifically, the weight of a fart can be deduced based on the density and volume of the gases involved. The average human fart is estimated to be around 30 to 90 milliliters in volume. Given the composition of a fart and the average density of the gases involved, the weight of a fart would be minuscule, measured in milligrams.

Practical Considerations

In practical terms, any difference in weight before and after farting is negligible. The sensitivity of household scales is not fine-tuned enough to register such a minute change. Moreover, the act of standing up and sitting down to weigh oneself before and after farting could cause more weight fluctuation than the fart itself.


So, how much does a fart weigh? While the concept might be fascinating, the reality is that a fart’s weight is so small it’s virtually immeasurable with everyday tools. It remains one of those quirky, almost philosophical questions – interesting to ponder, but challenging to quantify.

This peek into the lighter side of science not only entertains but also reminds us of the incredible intricacies of the human body and the gases it produces.