Up to 4 liters is the average person but competitive eaters are outliers that are far from average. I'm pretty sure that 4 liter number was based on the stomach of cadavers so its normally a lot less.
My max is just over a gallon and a half when I'm in good form and just like motobelly says I can stop stuffing myself for months and then come back and its usually only a week or two until I get back to max capacity.
5 years
