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TOPIC: Fitbit adjustment questions

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September 29, 2012 7:26 AM
Mike - Thank you so much for taking the time to explain so much to us about the Fitbit with MFP. happy

My question is pretty simple I think. All I would like to know is how to set up MFP and my Fitbit to work the best way together - Like calorie setting, activity level, etc. to keep them in sync as much as possible right now? I hope that is a simple one for you.

Thanks again!!flowerforyou

ETA: One last thing for me which is really why I bought the Fitbit to begin with - The TDEE is comes up with daily - Even with these gliches that keep going on the TDEE is still accurate correct? Just want to make sure b/c that is how I am basing my calories for the next day!! smile
Edited by autumnk921 On September 29, 2012 7:29 AM
September 29, 2012 7:28 AM
Sorry folks - we've been reviewing all of the data points that you've been providing, and after our review, we've decided to revert to our old way of calculating the adjustment. Our older method was definitely clearer to understand and after reviewing some of these cases, we've found that the old method actually led to more appropriate adjustments in some of these more unusual cases.

We've made the switch this morning so if you sync your Fitbit again, your adjustment for today should get updated. This change won't affect past entries, but it will affect new ones starting as of this morning.

Sorry for the delay in responding. We've actually been working on the issue non-stop for the past few days, and it definitely has the attention of our team (I'm the co-founder of MFP). Fitbit also has told us that the double-counting issue on their end has been fixed, so hopefully with this latest change we'll have all the problems sorted out.

Sorry again for the inconvenience. We'll continue monitoring the adjustments over the weekend. Let us know how it's working for you.

Hope you're enjoying MFP.
September 29, 2012 7:38 AM
September 29, 2012 8:06 AM

UPDATE - we've reverted back to our old way of calculating the adjustment. I've edited this post to explain the old way for anyone who would like to know the details of how the adjustment works.

There have been a lot of questions about how the Fitbit adjustment works, so here's a quick explanation of how it's calculated:

1) Go to and note the "Calories burned from normal daily activity" number
2) Add to that number any exercise calories you've logged in your exercise diary, EXCLUDING any Fitbit adjustment. The total number is your MFP projected calorie burn for the day
3) Calculate your Fitbit projected calorie burn for the day using the following formula:

Fitbit projected calorie burn = Fitbit calories burned so far + ((minutes left in the day / total minutes in a day) * MFP calories burned from normal daily activity)

4) Your Fitbit adjustment is then:

Fitbit adjustment = Fitbit projected calorie burn - MFP projected calorie burn

5) Finally, at this time we do not allow negative Fitbit adjustments, so we bring your Fitbit adjustment back to 0 if it's negative.

Thank you Mike. This makes Soooooo much more sense. Basically, you're taking Normal Daily Activity (what some might call TEE) and any calories burned above that, either entered into MFP or coming from Fitbit, get shown as a calorie credit. Like I said, that just makes sense.

My apologies if I've been, shall we say Grumpy? This computer issue has just been one of many this last week.
Edited by DavidC1857 On September 29, 2012 8:07 AM
September 29, 2012 3:03 PM
Thanks Mike!!! I think most of us r creatures of habit... For me personally the old way works better. MFP usually tells me I'm way under my calorie goal and need to take in more calories. I ignore it because I'm petite and the 1200 calorie recommended by MFP would only allow me to lose about a hf lb a week because I'm so close to my goal weight. I want to lose 1.5 to 2 lbs a week so that I will still be here in a month, but for maintenance instead of losing :). Again, thanks for switching back!!
September 29, 2012 3:15 PM
September 29, 2012 3:21 PM
I'm still lost on all of this. I just want it to work like it was a few months ago... Is that too much to ask?
September 29, 2012 4:42 PM
I just got my Fitbit yesterday but my is TOTALLY wrong. I have my daily activity on MFP set up correctly. I went for a long 18 mile run this morning. I logged it into MPF and recorded the time correctly. Then it gave me an additional 1100 calorie adjustment?! That is WAY too much. I have been logging and keeping up with my calories for a long time. And I know the calories I entered are correct because I have a HRM. Also, I know the Fitbit is tracking my steps right because when I synced it it said I had went 18.2 miles. Awesomely correct! But the calories are SO far off :(
Edited by LindsayE007 On September 29, 2012 4:43 PM
September 29, 2012 8:15 PM
September 29, 2012 9:48 PM
Fitbit has totally sucked lately, either way over or way under. If you have a HRM use it. This is the longest that fitbit has been screwed up and it isn't the usual screw up of just not syncing.
I walked for a few hours today over 12000 and got a 153 calorie adjustment. I usually get at least 400+, another day with similar activity gave me over 500+, totally unreliable right now.
September 30, 2012 6:15 AM
September 30, 2012 7:01 AM
I have had my Fitbit less than a month and I am still not sure I understand the "proper" way to use this thing. I use the stopwatch feature to record my sleep time and also any specific exercise times, like walking outside or walking on the treadmill. This morning I walked on the treadmill and used the Fitbit stopwatch to record the start/stop times of that activity. I went into MFP and logged the activity for the same start and stop times. That information appears to have synced back to the Fitbit site. in MFP, I see the hour of walking for 606 calories, but I also have a Fitbit adjustment of 257 calories. I have done no other activities this morning so I'm not understanding why I would have such a high Fitbit adjustment. Is the double-counting problem not fixed or am I doing something incorrectly when I enter the information?? I made sure to use the same time and duration when I entered the exercise. I also believe I have the timezones set correctly. I would welcome any advice!! Thanks!
September 30, 2012 9:24 AM
The "new way of doing things makes no sense. I'm not interested in MFP or FB projected numbers...I want to know what my ACTUAL numbers are. I used to get that, now I don't. I'm going to un-synch the device and do the math myself. Frustrating.
October 1, 2012 7:39 AM
I think this is playing up again... I did a workout this morning... and normally it's in the evening before I start to see some adjustments but my FB Adjustment is about 167 for 1516 cals burned (and I don't wear it at the gym)

I also noticed this morning, that when I synced after waking up it had an adjustment of 37 - which is unheard of... normally shows the adjustment line with a value of 0 and only starts adding during the latter part of the day.

Would be grateful if someone could take a look and let me know if there is an issue?
October 1, 2012 9:24 AM

I think this is playing up again... I did a workout this morning... and normally it's in the evening before I start to see some adjustments but my FB Adjustment is about 167 for 1516 cals burned (and I don't wear it at the gym)

I also noticed this morning, that when I synced after waking up it had an adjustment of 37 - which is unheard of... normally shows the adjustment line with a value of 0 and only starts adding during the latter part of the day.

Would be grateful if someone could take a look and let me know if there is an issue?

I've got a high Fitbit adjustment already also. Logged an early morning 55 minute 1083 calorie exercise session (HR monitor) and added to MFP. No Fitbit adjustment at that time, but 2 hours later after only sitting and having breakfast I have a 251 calorie adjustment. Normally, the adjustment comes later in the day as rfsatar says.

And while I would love to burn lots of calories while just sitting and eating I have to believe the MFP/FB calculation is adding incorrectly again.
October 1, 2012 1:12 PM

Question: Fitbit seems to be double counting my calories!


Thanks for the reply. I'm speaking about the adjustment we see in the exercise diary on MFP.

Just to summarize the issue reiterating my example:

--Today I ran, burning ~730 calories. I wore my FitBit Ultra during the work-out.
--Immediately after, I used the MFP app on my iPhone to log the type of exercise, the time I started, the duration of the exercise and the number of calories burned.
--Several hours later I returned home. My FitBit device synced with the FitBit server.
--I check the MFP app on my phone and see that I have burned an excessive amount of calories. I enter the diary and see that, not only are the calories I manually entered present (when I manually logged my exercise), but that there is a FitBit adjustment for nearly the identical number of calories.

What appears to be happening is that FitBit is ignoring the manual exercise I entered and adding the adjustment based upon the calories the device believes I burned during my work-out. In essence, my calories burned are doubled (or nearly so) within the diary. As such, I am showing that I can eat much more food than I actually should.

OK, I understand - this is a bug that we've been in communication with Fitbit about. They've told us that they are working on a fix, although I don't know what the status of that fix is. The symptoms of the issue are exactly as you described - you wear your Fitbit during some cardio activity, then log the exercise manually. The manually logged exercise is supposed to replace the calories tracked by your Fitbit tracker.

For example, if your Fitbit tracker thinks you burned 100 calories between 9am and 10am, but you know that you went for a bike ride during that time and actually burned 500 calories, then when you log your bike ride, Fitbit is supposed to replace the 100 calories burned with the 500 calories you logged manually, for a net gain of 400 calories. What appears to be happening though is that when you sync again, the 100 replaced calories come back, so your manually logged exercise now results in a net gain of 500 calories.

As far as we can tell, this issue isn't related to linking your account with MFP. As an experiment, you can try disconnecting MFP from fitbit, then logging your exercise directly on, and seeing if you see the same results.

Do you mind trying that and letting us know what happens? Either way, we will continue to work with the Fitbit team, who've been very helpful, to try to resolve the issue as quickly as possible.


We've been told by Fitbit that this issue is now fixed, so the double-counting issue should no longer be occurring. Please let us know if you are still seeing any double-counting.


No fix yet on this end. I manually logged my exercise today, burning 750 calories. Returned home. Checked MFP and the FitBit adjustment is 568 calories -- once again, double-counting my exercise.

Just wanted you guys to know that this issue is not yet resolved.

Thanks for your ongoing attention to this. I wish the moderators of the FitBit forums were as responsive and present in their forums as you are in yours.
October 1, 2012 1:50 PM
you have not converted it back to the old way from the summertime. I am just sitting at my desk at work and my fitbit added 200 calories burned to MFP after 4 hours.

I know how many calories it used to show on MFP when I worked out at lunch and now, although I love this new way of ADDING more calories for me to eat, it is not an accurate reflection.

What happened to the way it had been working for 8 months this year? something changed horribly in late August....
October 1, 2012 2:05 PM
bump ... heading to bed but will check to see if it tries to log an adjustment straight out of the gate again tomorrow...
October 2, 2012 5:32 AM
bump - day started promisingly with it showing stuff, then resetting itself to zero and now is creeping up again.
I entered two recorded sessions from FB in MFP (as always) and according to FB now I have burned 1064 cals and I am now seeing an adjustment of 68 in MFP quite early in the day,

I haven't been as active today, but I will be using the FB to record my tennis lesson and will enter that in MFP.

At the moment I am ignoring any FB adjustments at the end of the day and only focussing on calories "earned" through MFP logged exercise (some of which are timed activities in FB but NOT logged in there under any circs).

Please help as this is now becoming a bit of a pain.
October 2, 2012 10:12 AM
I've given up on the fitbit calorie adjustments. Each day I'll go back a day and reset the adjustment to whatever I feel I did rather than a crazy high number... Fitbit support is awful, they are dragging their feet with this bug.
October 2, 2012 10:26 AM
October 2, 2012 10:52 AM
Yes I added my walk in MFP and now Fitbit has sent the same amount of calories in an adjustment. I'm about to give up and unhook Fitbit from MFP.
October 2, 2012 11:41 AM
yesterday, 499 calories burned. Today, same amount of exercise, 29 calories :(
October 2, 2012 6:53 PM
Just wanted to ensure you all were aware the double-calorie issue has not been fixed.
October 2, 2012 7:28 PM
Mine maybe seems to be fixed??? It's hard to tell right now but it seems like it may be.

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