Depends on your size, weight, and activity level. Go to mypyramid.gov and it'll tell you if you type in your info. By the way if you' twelve, you're still growing, don't worry so much about calories, anyway where the calories come from is more important than how many. In short: probably around 1800-2000.
1800 calories average
2000
400 cal
An 8 year old should eat on average 3,431 calories a day.
around 1800
1,600 calories, in average.
If you multiply the average man's daily value of calories (2,000) into a year, it goes to 730,000. So, on average, probably between 700,000 calories and 750,000 calories per year.
on average a teenager should eat about 2,000 to 3,000 calories a day.
2200 calories a day is for an average 13yr old female
It varies based on gender, height, and activity, but the average teen that age should consume between 1,200 and 1,500 calories a day.
An average 6 yr old should be geeting about 1200 - 1400 calories per day
The average 12 year old girl needs about 1950 calories in one day. However, if your exercise level is not the best, you should take in about 1690 calories.