Here are two online calculators which do the work by inputing your weight and height:
BMI Calculators
HOW TO CALCULATE BMI
ANOTHER WAY HOW TO CALCULATE BMI
A SUGGESTED CALORIE INTAKE
by age and activity
AUTHOR NOTE: These figures seem a little high based on our experience but they are a guideline to gauge your own intake per day.
Here is a visual guide to BMI someone sent me :-)