Here are some very helpful sites in determining your maintenance calories...
http://www.freedieting.com/tools/calorie_calculator.htm
http://www.acaloriecounter.com/diet/calorie-maintenance-calculator-daily-calorie-requirements/
http://www.freedieting.com/tools/calorie_calculator.htm
http://www.acaloriecounter.com/diet/calorie-maintenance-calculator-daily-calorie-requirements/