Your age in years _______ X 9.53 = ________(A)
Your weight in kilograms (1 pound = 0.45 kilograms) _______ X 15.91 = ________(B)
Your height in meters (1 inch = 0.025 meters) _________ X 539.6 = _________(C)
Your activity level (Use 1, if you’re inactive; use 1.11 if you do 30 to 60 minutes of daily moderate activity; use 1.25 if you do at least 1 hour of daily moderate activity; or use 1.48 if you do at least 1 hour of daily moderate activity and 1 hour of daily vigorous activity, or 3 hours of daily moderate activity) _________ (D)
Subtract A from 662. _______ (E)
Add B and C, and multiply the result by D. ________ (F)
Add E and F, for your total daily calorie needs. _________________
http://blogs.menshealth.com/health-headlines/calculate-your-daily-calorie-needs/2010/07/13