Fitday's activity log uses standard MET values that can be found here:

https://sites.google.com/site/compen...ity-Categories
I am wondering what the exact formula Fitday uses to calculate calories burned from these standard MET values. I ask, because the numbers Fitday comes up with, vary dramatically from the results I get from any of the equations presented on the above referenced site. It makes me wonder how accurate Fitday's calorie burn numbers are.... or anyone else's for that matter.