How do you precisely calculate your tdee?

[mon1308]

I am 16 year old 5'11 83kg going to the gym 3-4 times a week and 10k steps daily.I used that website named tdee calculator and got the result at 2900 for maintance.I wonder is it accurate and are there any ways to get more precise result?

 

[poidflayer]

Just try out 2900 calories and measure your weight in the morning and then after week measure your weight at the morning again, make sure you’re not bloated or anything and if it’s the same then you’re good, if there is a difference then increase or decrease calories accordingly. Now mark as solution