I don’t know how to word it really, but say a online calculator says my TDEE is 3100 calories a day is there a way looking at my watch to see if that’s likely accurate or can the watch help dial it in more by using resting energy and active energy?

Watch says my avg resting is 2600 with daily active of 716 calories does that mean my TDEE Is 3200ish a day ? For weight loss subtract calories off of that number ?

Does the watch base active calories on my movement and heart rate etc?

Thanks