Calories to eat a day?

Question

im 14 yrs old

5 ft tall

how many calories would i eat i a day to maintain my weight if i weighed 90 lbs

and how many calories would i eat a day in order to gain weight at 80 lbs?

Answer 1

The general formula of how much you should eat is:

[Your weight] x [15] = how much you should eat to maintain same weight

[Your weight] x [15] - 500 = how much you should eat to lose 1 lb a week

[Your weight] x [15] + 500 = how much you should eat to gain 1 lb a week

Generally speaking 3500 excess calories = 1 lb

But that formula will not ACCURATELY describe you depending on your metabolism. Of course you can eat a LOT more and not gain weight if you can do cardio properly but that's for another day.