calories burned for a 300+ person at one hour of walking.

Kst76

What would be a good estimate of calories burned for a 300+ person at one hour of walking.
Let say the pace is 3.3 mph. Have any of you who are around that weight used s heart rate monitor to measure your burn?
I'm asking for a friend of mine.

Mokey41

Have your friend create a profile here and use the exercise logging function.

Kst76

Have your friend create a profile here and use the exercise logging function.

I would like to have someone who used a hr monitored for comparison. I use mfp and my burn seem right while his is extreamly high.