<human>: I know that many people have this question, whether they are looking to buy a Fitbit or just wondering how accurate their's is (I hope it's similar to mine if they're made the same!).

I wrote down my Calorie Intake & Calories Burnt (the number Fitbit told me everyday) and weighed myself everyday to compare & calculate.

Results:

- total calories lost in 18 days *(solely using Fitbit's Calories Burnt + using MFP for Calorie Intake)*: 2006.0 kcal
- weight lost in 18 days: 0.5429 lbs

Calculations:

- 2006 kcal *(total lost calories)* / 3500 *(calories in a pound)* = 0.573 lbs
- 0.573 *(estimated pounds I should have lost)* - 0.5429 *(pounds I actually lost)* = 0.0302 lbs
- 0.0302 * 3500 = 105.85 kcal
- 105.85 / 18 *(days)* = 5.88 kcal

*I will continue with this and re-post another result after a couple of months or so when I have more data :)

Give me the gist of the text in a nutshell
<bot>: My Fitbit is ~5.88 kcal off per day *(this could be because of both; my calorie intake input or Fitbit's calories burnt output)*.