You technically burn a tiny amount of calories when you fart, but it’s so small that it’s basically zero in terms of weight loss or fitness.

Quick Scoop: Do you burn calories when you fart?

  • Farting is mostly a passive process, where the anal sphincter relaxes and gas escapes, so your muscles are not doing meaningful work. Experts note that you’re not actively burning measurable calories from simply passing gas.
  • Medical sources and obesity specialists are clear: farting does not burn 67 calories, and any energy use is too small to register on a calorie counter or affect body weight.
  • Estimates from health and fitness writers put it at a fraction of a calorie per fart —even 20–25 farts in a day would only add up to around a quarter of a calorie or less.

In other words: yes, there’s a microscopic energy cost to moving gas out of your body, but it’s so tiny that, for practical purposes, farting does not burn calories in any useful way.

Why farting doesn’t “burn fat”

  • To burn a meaningful number of calories, your body needs muscle contraction (like walking, lifting, or even shivering). Farting usually happens when muscles relax, not when they’re working hard.
  • That viral internet claim that “each fart burns 67 calories” has been repeatedly debunked by doctors and health sites as a myth with no scientific basis.
  • If you “strain” to push one out, your body still wouldn’t burn anywhere close to enough energy for it to matter; breathing or fidgeting will burn more calories than a fart.

A simple way to picture it: the energy cost of a fart is like picking up a single grain of sand when what you really need for weight loss is to move a whole wheelbarrow.

How many calories are we talking about?

Here’s a rough illustration, using ballpark estimates from health writers and myth‑debunk articles:

  • 1 fart: far less than 1 calorie, effectively near 0.
  • 10 farts in a day: around 0.1 calories total—still practically nothing.
  • 50–100 farts in a day: maybe around 0.5–1 calorie combined, which won’t show up on any scale and won’t change your body weight.

Some articles joke that even if those wild “67 calories per fart” claims were true, you’d have to spend your day doing nothing but passing gas to see a difference—something real science says is flat-out wrong.

Why you feel lighter after a fart

  • Letting gas out can relieve pressure and bloating , so you might feel lighter, less tight, or less uncomfortable.
  • That sensation is about less gas and less stretching in your intestines, not about losing fat or burning real calories.

It’s a relief effect, not a weight‑loss effect.

If you actually want to burn calories…

Farting won’t move the needle, but these will:

  1. Movement and exercise
    • Walking, jogging, strength training, and sports all use large muscle groups, which meaningfully increases calorie burn and supports fat loss.
  1. Daily activity
    • Non‑exercise movement like cleaning, taking the stairs, or standing more (often called NEAT) can add up to a significant number of calories over the day.
  1. Food choices and portion control
    • A moderate calorie deficit (eating slightly fewer calories than you burn) is what actually drives weight loss over time.

Farts can be funny, awkward, or relieving—but they’re not a weight‑loss strategy. TL;DR:
You do not meaningfully burn calories when you fart. Any energy used is a microscopic fraction of a calorie—too small to measure, and absolutely useless for fat loss or fitness.

Information gathered from public forums or data available on the internet and portrayed here.