Fitbit and MyFitnessPal calorie calculation. Which one to use?

[Hp1990]

This literally makes no sense, I have looked it up and done my research. The myfitnesspal app says on there that based on my fitbit I've burned 3,210 calories total, and yet myfitnesspal says I've only burned 883, huge difference. The myfitnesspal app knows my fitbit says 3,210 calories burned but for some reason doesnt show that, why? I've turned on negative calorie adjustment, I've synced and re synced 1000 times, and yet it is still wrong. Someone please explain this to me because it literally blows my mind. If myfitnesspal knows how many calories I've burned through my fitbit then why does it not use that number instead of some adjustment between it and another random number? Help please. 

[RobertoME]

Hello @Hp1990, good to see you have joined the Fitbit Community! I was reading your post and I can recommend the following:

The first is to review all your information is syncing correctly in your Fitbit Dashboard. If the information is correct then try to revoke the access again. But once you have revoke the access wait for at least 15 minutes. More instructions can be found here.

If the issue still persists then the following post will be helpful: MyFitnessPal: How to correct calorie discrepancy from MFP to Fitbit.

See you around and let me know if you have more questions.