Age (years)
Weight (lbs)
Height (inches)
Body Fat (%)
Lean Mass (lbs)
Daily Protein (g)
Activity Level
Male
Female

Wikipedia has the Harris-Benedict and Mifflin-St Jeor equations.

http://www.tim-richardson.net/BodyForLife/analysis.html has Fat Free Mass and Simple Estimate.

BMR Maintenance Use
Harris-Benedict
Mifflin-St Jeor
Fat Free Mass
Simple Estimate
Desired Weight Loss pounds/week
Meals per Day
Carb/Protein/Fat ratio
Caloric Intake kcal/day
Carbohydrate grams/meal
Protein grams/meal
Fat grams/meal