#3757
Son todas cálculos aproximados. Ninguna te va a dar el valor exacto. Lo que puedes hacer es calcularla de varias formas y hacerte una idea aproximada del rango que dan, luego ya vas probando a ver qué tal te funcionan y subes o bajas.
Yo uso Harris-Benedict corregida, porque no tengo ni idea de mi %bf (no me fio de las máquinas de las farmacias):
The Harris-Benedict equations revised by Roza and Shizgal in 1984.[3]
Men BMR = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm) - (5.677 x age in years)
Women BMR = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) - (4.330 x age in years)
Luego le aplicas el factor de corrección en función de tu actividad física:
Step 2 – applying the Harris-Benedict Principle
The following table enables calculation of an individual's recommended daily calorie intake to maintain current weight.[4]
Little to no exercise Daily kilocalories needed = BMR x 1.2
Light exercise (1–3 days per week) Daily kilocalories needed = BMR x 1.375
Moderate exercise (3–5 days per week) Daily kilocalories needed = BMR x 1.55
Heavy exercise (6–7 days per week) Daily kilocalories needed = BMR x 1.725
Very heavy exercise (twice per day, extra heavy workouts) Daily kilocalories needed = BMR x 1.9
http://en.wikipedia.org/wiki/Harris-Benedict_equation