I don't allow my clients to worry about such things. It's an exercise in futility since you're working on very rough estimates anyhow and there are too many variables at play.
So why waste time on it, is my take.
My approach with calories is very simple. Set a caloric goal based on whether you are wanting to lose, gain or maintain weight. Insert a *sane* amount of exercise into your life, which might consist of 3-4 days of resistance training and cardio you could get away with nearly every single day assuming it's all not high intensity stuff.
From there, tweak your calorie intake based on what your body is doing in relation to your goals.
I don't see a reason to make it more complex than that.