Hello,
Thanks for writing to Health Care magic, I am Dr , Muhammad Ahmad , I have read your question closely, I understand your concern and will be helping you with your health related problem.
You are in growing age so you need more calories compared to an adult who has passed his growing age and just needs to put on mass. I would suggest you to do strength training under supervision of a certified fitness expert as amount of calories will depend upon, many factors :
1) Your
metabolism.
2) You are in growing age.
3) Food you will take other than supplement if advised.
4) Intensity of workout your are doing, as intensity of work out changes your calorie requirement is going to change with that.
Number of calories can not be suggested without knowing these factors so I would suggest you to start your training under a fitness expert to get the best out of it.
I hope this answered your question, If you have more queries I am happy to answer you.
Regards.
Dr.Muhammad Ahmad