Caloriea burned cant be right? Or needa explained

[Mitay95]

I recently got a fitbit charge 4 and I've been using it to track my calories burned. 

I've been going to the gym for a couple of months now. 

Using online tdee calculators my maintenance calories appear to be between 2400-2600 depending on which website I use. 

I am 25 170cm and 68kg. I work replenishing shelves 9 hours/6 days per week and do stregth training 2hours/6days a week. 

My fitbit is showing that I am burning 3500-4000 calories/day. Is it possible that this is correct? I am trying to bulk. I've been eating 3000 calories/day and I've actually lost weight past couple of weeks. Is the fitbit wrong or should I really be eating that much more? 

Please help

[Heybales]

If you had really accurate logging of food eaten during those 14 days, and amount lost over same 14 days - you could pretty much nail what your daily burn is if the activity has been about the same.

So literally strength training for 2 hrs daily?

What kind of program? Is that just the lifting time, or warmup/cooldown cardio too?

I'll say this - if you are starting a workout on Fitbit, then it's using HR-based calorie burn is calculated - it's inflated for strength training.

It may be 25%, may be 50%.

Normally that could be a meaningful amount - but your daily activity is rather high too, so it's probably a small % of your daily burn in general.

If your weight lifting is sets 2-5, reps 3-15, and rests 2-4 min, then that is traditional and on Fitbit it's called Weight Lifting in the database.

If high reps and low rests, then probably Circuit Training.

But, take yesterday and note the Fitbit daily burn, and find the workout start & duration time listed - and create a Workout Record for Weight Lifting, enter same start/duration times, and accept the calories burn given.

How much did the daily burn go up or down?

How accurate do you think that 3000 calories is for eating - do you weigh everything you eat, since calories is per grams?

Needless to say, no matter how accurate your food logging or Fitbit is - if losing weight (unless we are talking about some water weight fluctuation due to sodium intake levels, or soreness, ect), then you are eating less than you burn.

Obviously opposite of bulking - so you need to eat more.

Some answers to above questions I can see if any tweaks will help your Fitbit be a better estimate of daily burn.

Oh - didn't know if male or female, but a better TDEE calc that accounts for daily activity AND exercise both is estimating around 2500-2800 - so that's likely not right either.