why do calories expended differ on exercise machines

seymour24747

Does anyone know why calories expended differ from what is reported by say an elliptical machine, versus what it calculates or translates to on this website or other websites??? It seems like my calories expended is always much lower when I use what the machine at the gym reports, versus what is calculated here. Does anyone know which one is right and why there is such a discrepancy???

GetSoda

Because it's all based on different -guesses-
None of them are right.
Play it safe and go with the lowest.
And it's probably lower than that.