Does anybody have a chart listing how many calories a person should eat based on what gender they are and how old they are? Doesn't the "calories in" change depending on your age and sex?

That is a good question... let me look and see what I can find out on that!

Here is a basic guide. This one doesn't break it down by ages, but rather just an overall guide.

Sex, Activity Level, Calories Required
Male, Sedentary, 2400
Male, Moderate, 2800
Male, Heavy, 3800

Female, Sedentary, 1900
Female, Moderate, 2100
Female, Heavy, 3000


This list describes which activities fall into the sedentary, moderate, and heavy categories:
A. Sedentary Activities
Lying down or sleeping
Sitting quietly
Sitting and writing, card playing, etc.

B. Moderate Activities
Bicycling (5 mph)
Canoeing (2.5 mph)
Dancing (Ballroom)
Golf (2-some, carrying clubs)
Horseback riding (sitting to trot)
Light housework, cleaning, etc.
Swimming (crawl, 20 yards/min)
Tennis (recreational doubles)
Volleyball (recreational)
Walking (2 mph)

C. Heavy Activities
Aerobic Dancing
Basketball (recreational)
Bicycling (13 mph)
Circuit weight training
Football (touch, vigorous)
Ice Skating (9 mph)
Racquetball
Roller Skating (9 mph)
Jogging (10 minute mile, 6 mph)
Scrubbing Floors
Swimming (crawl, 45 yards/min)
Tennis (recreational singles)
X-country Skiing ( 5 mph)

You can search for some website that offers a tool that calculates calories on food you are going to eat. That could help you on choosing a right food for you. You have to ask your doctor about the calorie needs of your body.

This site: http://www.weightlossforall.com/calorie-requirements-daily.htm offers a formula to work it out.

The amount of calories one should get depends on a lot of factors - not just age and gender. It is targetted differently for each person, with physical activity, age, height, etc also taken into consideration. If you are looking for an accurate number of what you should be eating with a balanced workout regime, then I suggest talking with a doctor. Otherwise, simply search for a caloric intake calculator and there are tons of resources online. Trust the one that asks you for the most information before calculating it.