Fitbit Calories - HELP!

kellysdavies

Hello. I ran 20k today at approx 7.21 per K running for 2hrs 34 mins total.
MapMyRun/MFP give me 1401 calories for this. However Fitbit says I only earned 994 calories. So which is right?
I am female, age 36, 5ft 1.3 and weigh 9stone4
Such a huge variation and the difference between having some more cake or not so I would love to know. Why so different ? Who to trust ?
Thanks
Kelly

dougpconnell219

Is your fitbit using heart rate? If so, I'd go with that.

If not, I'd take the lower of the two.

kellysdavies

No. It's not using. It's just a flex. So Fitbit gives me the lower reading. Boo. No more cake!