Need help understanding quick calorie burn/intake question

[Kayladriker]

If I consume the exact (or within 50 ) of the calories it says I have left for the day, is that still in consideration of my weight loss goal?  I can't find a explination for the math behind it.  

As of this moment, it says that I have burned 1,711  , consumed 993 and have 363 remaining.  This would put me at -355 calories, but I thought when I first began to fill out the information it said I needed to be -750 in order to meet goal on the 3rd level of difficulty.   Help me understand please!

[Gordon-B]

I think what it's calling "calories burned" = Your BMR for the part of the day that's already happened + Your activity for the part of the day that's already happened.  However, for calculating how much you can eat, it knows that you will also burn your BMR for the part of the day that hasn't happened yet.  You're going to burn BMR just for being alive (and most of it even if you're comatose and on a mechanical respirator so you're not even breathing for yourself). 

I note that fitbit can generate "calories burned" graphs for just BMR for days before I was born, much less wearing a tracker. 

It gets confusing trying to make "trades".   You can't "trade" BMR calories because you always burn them.  So if you pick an activity like sex or running around the block several times that burns 200 calories (including BMR, the way the fitbit graphs show it), then eat a 200 calorie slice of birthday cake, YOU'RE NOT EVEN.  You only get to eat (200 calories - your BMR for the time of the activity) calories of birthday cake to stay even.  Since your BMR is maybe 2/3 of what you burn in a day (the rest being activity) the difference may be significant.

conservative_estimate_of_what_you_will burn = Your BMR for the *ENTIRE DAY* + Activity calories for the day so far.  This is, I believe, what fitbit uses for the calculation of what you can eat but not what it displays for burned calories.  Just before midnight the numbers will make sense, since the BMR for the remaining part of the day is almost 0.

If I consume the exact (or within 50 ) of the calories it says I have left for the day, is that still in consideration of my weight loss goal?  I can't find a explination for the math behind it.  

I believe the answer to this is YES. 

As of this moment, it says that I have burned 1,711  , consumed 993 and have 363 remaining.  This would put me at -355 calories, but I thought when I first began to fill out the information it said I needed to be -750 in order to meet goal on the 3rd level of difficulty.   Help me understand please!

I think this means that your remaining BMR calories for the day are (750 - 355) = 395.  You must be observing this in the evening.  Your calories OUT just before midnight if you spend the rest of the day watching TV and/or sleeping will be 1711 + 395 = 2106.  Your calories IN will be 993 + 363 = 1356 if you eat what it says you can.  Your defecit will be 2106 - 1356 = 750.  If you do more exercise, the number of calories you're allowed to eat will go up. 

I hope it's giving you a conservative estimate, assuming that your activity will be low for the rest of the day.  Otherwise it is giving you permission to eat calories which it will then "take back", something which tends to be messy.

[wtksk8r]

@Kayladriker  My explanation of the numbers in the link below:

https://community.fitbit.com/t5/Flex/New-to-Fitbit/m-p/702490#M95240

Hope this helps.