This is interesting to me, as I have the opposite issue. I've been consistently under on FitBit, but over on MFP??? Both are set to the same goals.

I have the same issue as the OP -- I can be under in MFP but over in FitBit. And after midnight the two seem to reconcile to what FitBit said, ending in me being over in MFP as well. Looks like MFP is overestimating its adjustment just a bit. It does seem to be getting better over time but still isn't totally resolved.

To avoid going over on MFP, I try to leave at least 50 cals left over after dinner/dessert is finished.

I'm also so confused on all of this! Have the same issues. I'm not even sure what my daily calories should be or what I should go off of. I don't know what I have fitbit set on for how active I am, but I changed mfp to sedentary. Which puts me at like 1250 calories I think. But I don't know whether to eat my exercise calories or not! Ugh! What do you guys do? And have you measured your stride length? I have no clue how to do it!

I'm also so confused on all of this! Have the same issues. I'm not even sure what my daily calories should be or what I should go off of. I don't know what I have fitbit set on for how active I am, but I changed mfp to sedentary. Which puts me at like 1250 calories I think. But I don't know whether to eat my exercise calories or not! Ugh! What do you guys do? And have you measured your stride length? I have no clue how to do it!

If you are following the MFP method, you are supposed to eat back your exercise calories because the number is not included in the base number MFP gives you. You should eat the FB calories it gives you as well because this means that you are burning more than what you told MFP you were going to burn.

In my opinion, FB and MFP should be set up with the same weight loss goal (verify it by looking at your goals page - it should tell you what your daily deficit is and projected weight loss is). MFP should also be set to sedentary, unless you are getting a fitbit adjustment of more than 200 cals EVERY DAY when it is set to sedentary. From what I can tell, at least on my settings, the difference between sedentary and lightly active is 200 cals. lightly active to active is another 270 cals. If I were always getting an FB adjustment of at least 200 cals that did not include my exercise, I would set myself to lightly active BUT on Sundays, I am pretty lucky if I my FB adjustment does not take cals away from me because this is my laziest day. There also can be days in the week that I am pretty lazy so having my settings at higher than my laziest day would not be a good thing.

I would rather earn my cals throughout the day, than have them taken away when a sync occurs.

As for OP's issue, its possible your 2 lb a week weight loss goal is to aggressive. I dont know what your actual settings are or your weight but you have 50 lbs to lose according to your tracker and you picture is cute and does not make you look like you need to lose a lot of weight SO, maybe 2 lbs a week is not actually setting here on MFP. If you look at your goals page, does it tell you that you are set at 1200 with a planned 2 lb a week loss? If it does not, then you need to adjust your settings on FB to match what MFP is allowing you as a maximum weight loss goal (keeping you always above 1200 - FB will let you go lower though and this might be causing your discrepancy).

Also, do the numbers match up at the end of the day? If so, then all is well because MFP and FB use different calorie algorithms but they are close to each other.

If you are coming up with the difference during the day (MFP says you have 300 cals left FB says you have 200 cals left), the reason is because MFP takes your statistics plus your weight loss goal plus your claimed activity level and comes up with a number. FB takes your statistics plus your weight loss goal and your ACTUAL activity level and comes up with a number. If your actual activity level is less than what your stated activity level is, you are going to have a difference between them. But as FB continues to update MFP with your actual activity, MFP will gradually (as the day gets closer to ending) go lower and lower until it matches what FB said you actually burned.

Im confused also. As a trainer told me to lose weight I should not eat back the calories.So I eat only my alloted calories. BUT my loss has been extremely slow. Which my be my age, 52.

I use the activity calories, as just are reference to encourage me to keep working on burning more.

Still I would like FITBit TO UPDATE with MFP more often than it does.

If you are following the TDEE method, your fitness calories are included in the number you are supposed to eat.
If you are following the MFP method, your fitness calories are not included and therefore anything you burn, you are supposed to eat.

You are close to goal so the weight loss is going to be slower. You are burning less calories and need less calories to function. For this very same reason, I workout hard and burn lots of calories each and every day because I want to eat more food. And still lose weight. At a slow and reasonable pace of .5 lbs a week.

I basically use the activity calories, as just are reference to encourage me to keep working on burning more.

Me too.

I changed mfp to sedentary. Which puts me at like 1250 calories I think. But I don't know whether to eat my exercise calories or not! Ugh! What do you guys do?

I set my MFP activity level to sedentary, b/c I have a desk job. I got a Fitbit, linked my accounts, and stopped logging step based exercise. (I log non-step exercise in Fitbit.) When I found I average 8,000 steps per day, I changed my activity level to lightly active. Now my exercise adjustments are pretty minimal. I eat them back, and I'm losing.

It will take trial & error to find which settings work best for you.