The estimated daily calorie needs for moderately active boys include: 2 years - 1,000 calories/day. 3 years - 1,400 calories/day. 4 years - 1,400 calories/day. 5 years - 1,400 calories/day. 6 years - 1,600 calories/day. 7 years - 1,600 calories/day. 8 years - 1,600 calories/day.
https://www.verywell.com/calorie-calculator-for-kids-3950475
The Calorie Boost option is there for those who have real trouble gaining any sort of weight (the kind of people that can eat anything but never gain). Due to the large amounts of food needed, meals will need to be divided into 5 or 6 per day.
https://www.freedieting.com/tools/weight_gain_calculator.htm
Find out in two simple steps. The amount of calories you should eat every day depends on a few things: Age, height and gender. Daily activity level. If you want to lose, maintain or gain weight.
http://www.calorieking.com/interactive-tools/how-many-calories-should-you-eat/?ref=nav
Weight Gain Calculator. Determine the amount of Calories and grams of food required to bulk up, build muscle, and gain weight. WEIGHT GAINING CALCULATOR. Activity level is based on 3 weight training sessions per week, and little or no cardio.
https://www.freedieting.com/tools/weight_gain_calculator.htm
To lose weight you should eat. to calories per day. This calorie target will allow you to lose weight at a healthy and sustainable rate of 1 to 2 lbs per week. To maintain your weight you should eat. to calories per day. This calorie target allows you to maintain your current weight, within a margin of a few pounds.
http://www.calorieking.com/interactive-tools/how-many-calories-should-you-eat/?ref=nav
To Lose Weight. To take off one pound per week, you’ll need to reduce calories by 500 per day (1 pound of body fat equals about 3,500 calories). Try eating 250 calories less per day and exercising enough to burn 250 calories, like walking about 2.5 miles each day. The easiest way to cut back on calories is to watch your portion sizes.
https://www.shapefit.com/calculators/calories-per-day-calculator.html
Calculate How many calories you should eat in order for weight gain – Calorie Calculator. Enter your details in the Weight Gain Calculator and how fast you want to gain weight. It tells you how many calories to eat per day. How This weight gain calculator works. First it determines how many calories your body burns per day. The weight gain calculator first determines your resting metabolic rate (RMR) which is how many calories your body burns while resting.
http://howtogainweight123.com/calculators/gain-weight-calculator
Note: to gain one pound, you must eat 3500 calories more than the amount of calories that your body burns. The weight gain calculator adds these values together to determine how many calories you should eat per day to obtain your desired weight within the amount of days you entered.
http://howtogainweight123.com/calculators/gain-weight-calculator
Tipping the scale. Your weight is a balancing act, but the equation is simple: If you eat more calories than you burn, you gain weight. Because 3,500 calories equals about 1 pound (0.45 kilogram) of fat, you need to burn 3,500 calories more than you take in to lose 1 pound. So, in general, if you cut 500 calories from your typical diet each day, you'd lose about 1 pound a week (500 calories x 7 days = 3,500 calories).
http://www.mayoclinic.org/healthy-lifestyle/weight-loss/in-depth/calories/art-20048065
This calculator is for people who want to increase muscle (bulk up) while keeping fat gains to a minimum. An effective weight training program is absolutely essential (otherwise all calorie excess will be stored as fat). See the weight gaining article for more.
https://www.freedieting.com/tools/weight_gain_calculator.htm
how many calories do i need to gain weight per day
You need 3500 calories eat to gain weight per day. You need to eat 3500 calories to gain one pound weight per day.