Can someone explain this?

[1911Matt]

Looking at the info in the screenshot, how can I possibly have that many calories left?  I would aim for 2500 if I was doing this alone.  But on the hardest setting, Fitbit has these outrageous number

[USAF-Larry]

I moved this post to the Android App Help Forum, @1911Matt, where it will get more response.

The reason it shows that you have so many calories left is because it shows you have burned almost 4,000 calories, which is probably not a reasonable number. It shows you have only gone 5 miles, with 86 active minutes.  Make sure your profile is properly set up with your age, sex, weight, etc., since that is used to calculate your BMR, and thus your calorie burn.

[1911Matt]

I'm a big guy.  336 pounds at 6'3" tall. I spend 30-45 minutes in the gym every night.   Do you think the burn rate is off?  I have all my info set up correctly in the app.

[Colinm39]

@1911MattWelcome.. Use this calculator which is recommended by Fitbit because it has the same BMR equations. From my estimate your BMR is about 2,500 calories and we add an effort factor to that so can set your Calorie Burn Goal.  1 year in age only accounts for 5 calories so it would be reasonable.

Fitbit always allow the effort factor with the extra calories burned because they want to ensure you are consuming enough energy for the effort.

These factors are typical and you multiply your BMR by a selected factor to give you your Calorie Burned Goal. Or divide your Actual Calories Burned by your BMR to get your effort factor.  In your case  3984/2500 = 1.59 and if you refer to the table below it is similar to many of us.

And as @USAF-Larry posted definitely make sure your physical settings are correct

Sedentary.  Little to no regular exercise. (factor 1.2)

Mild activity level: Intensive exercise for at least 20 minutes 1 to 3 times per week. This may include such things as bicycling, jogging, basketball, swimming, skating, etc.  If you do not exercise regularly, but you maintain a busy life style that requires you to walk frequently for long periods, you meet the requirements of this level.  (factor 1.375)

Moderate activity level: Intensive exercise for at least 30 to 60 minutes 3 to 4 times per week. Any of the activities listed above will qualify.    (factor 1.55)

Heavy or (Labor-intensive) activity level: Intensive exercise for 60 minutes or greater 5 to 7 days per week (see sample activities above).  Labor-intensive occupations also qualify for this level.  Labor-intensive occupations include construction work (brick laying, carpentry, general labor, etc.). Also farming, landscape worker or similar occupations.     (factor 1.7)

Extreme level: Exceedingly active and/or very demanding activities:  Examples include:  (1) athlete with an almost unstoppable training schedule with multiple training sessions throughout the day  (2) very demanding job, such as shoveling coal or working long hours on an assembly line. Generally, this level of activity is very difficult to achieve.  (factor 1.9)