Nelson Vergel
Founder, ExcelMale.com
This easy tool helps to determine how many calories you need to gain or lose weight. Use the desire weight as an input and do it again with your current weight. The difference will be the calories you would have to add or decrease to get to your weight gain or loss goal.
http://www.exrx.net/Calculators/CalRequire.html
http://www.exrx.net/Calculators/CalRequire.html