Burnt 2500 Calories on a long walk - Fitbit Overestimating or Not?

[Gare_Bear]

Hi all,

More or less as described in the title. Recently went for a walk with someone and Fitbit claims I burnt about 2500 calories on the walk...

For clarity, I'm about 5' 10" tall, a male, weigh about 121kg (or around 19 stone in old money) and the walk was approximately 12km, about 16,700 steps and took us about 2.5 hours.

I understand that sometimes us larger folk can burn more calories doing exercise, but even so, 2500 feels like a lot! Is my Fitbit Overestimating, or is there something else going on here? Would appreciate some help if anyone can, thanks.

[JohnnyRow]

First check your weight is entered correctly.
Besides weight, calorie burn is based on heart rate.  Look at the heart chart in the workout summary for your walk.  Does it look reasonable? 

[Gare_Bear]

Hi Jonny, thanks for reaching out.

Weight is entered correctly. Heart rate remained in the "moderate" range for the whole walk (minus a little build up at the beginning) averaging at 133 BPM, which feels about right based on how I felt during the walk.

[JohnnyRow]

I don't know enough to judge its accuracy from that, but at least it wasn't a totally unreasonably reading or jumping all around.  You might just keep that in mind and compare that to your heart rate and calorie burn rate on other shorter walks and see if they seem comparable.  I was just thinking maybe there would be something obviously wrong, but there doesn't appear to be.  It does seem like a lot but it is probably possibly possible if you were pushing yourself and working hard.

[Gare_Bear]

Okay, thanks for your help JonnyRow. I'll keep an eye out during future exercise.

If it is the Charge6 doing some serious overestimating (bearing in mind, I've had it only around a week), then is there something I can do to sort it?

[JohnnyRow]

There's no adjustment or anything like that.