How accurate are the calorie meters on gym equipment?

I use two different treadmills, one at home, the other at the YMCA.
Both have the calories burned counters, the treadmill at the gym
has imputs for age and weight, I'd assume for the calorie used math.
I'm 58 years of age and weigh 205 and the machine tells me I burn
about about 800 calories burned during an hours' walk of 4.7 mph
with an incline of 4.0 degrees. Does that sound about right for
the calories burned?

"McAlisters" <nospam@nospam.org> wrote in message
news:ZgCPi.138829$GO6.23902@newsfe21.lga...
>I use two different treadmills, one at home, the other at the YMCA.
> Both have the calories burned counters, the treadmill at the gym
> has imputs for age and weight, I'd assume for the calorie used math.
> I'm 58 years of age and weigh 205 and the machine tells me I burn
> about about 800 calories burned during an hours' walk of 4.7 mph
> with an incline of 4.0 degrees. Does that sound about right for
> the calories burned?
>
yes, it is in the ballpark according to what I have read and equipment I
have used. 4.7 mph is really moving for walking.

On Oct 11, 8:57 pm, "McAlisters" <nos...@nospam.org> wrote:
> I use two different treadmills, one at home, the other at the YMCA.
> Both have the calories burned counters, the treadmill at the gym
> has imputs for age and weight, I'd assume for the calorie used math.
> I'm 58 years of age and weigh 205 and the machine tells me I burn
> about about 800 calories burned during an hours' walk of 4.7 mph
> with an incline of 4.0 degrees. Does that sound about right for
> the calories burned?

It does sound about right, but how in the world can you walk at 4.7
mph? That is a jog for me. I can't walk past 4.4 mph. At 4 mph my
machine says I burn 460 cal in a hour, but it doesn't allow input for
weight so I know it is some kind of average figure. dkw