TDEE (total daily energy expenditure)
TDEE is everything you spend in a day: your resting rate, the energy cost of digesting food, deliberate exercise, and all the incidental movement in between. The usual estimate multiplies a BMR estimate by an activity factor.
Example
A BMR of 1780 kcal with a moderate activity factor of 1.55 gives a TDEE around 2760 kcal. Individual TDEE at a given estimate commonly varies by 10–20%, so treat it as a starting point rather than a budget.