Am I really burning 3500-4000 calories per day?

[V_H]

Some of the online calorie calculators I've used have estimated my daily burn to be as low as 2,900, but some have estimated it as high as 4,500. I have no idea how to tell which is more accurate, so I'll just post my stats here:

17 yrs
150 lbs
6'0"
today I slept for 8 hours, worked on my feet stocking shelves for 4 hours (lots of heavy stuff btw), biked 14 miles (14mph) and ran 2 miles (8min mile). The other time consisted of watching football and doing light activity like walking around the house and working on the computer.

Also should I factor in the 200-400cals my body burned from eating 3,800 cals today?

[dat]

The most accurate way to determine your maintenance is by trial-and-error. Eat a consistent amount of calories daily and monitor your weight over a few weeks; if your weight stays about the same, that number is your approximate maintenance.

[rock201]

Idk, but you're a teenager (my age), you're tall, you're doing cardio, and you're doing four hours of work. Think about it.