Weightloss tools

Body Mass Index (BMI)

Waist size

Calculating your daily calorie needs

There are two ways to calculate your typical calorie needs per day:

Key for both calculations: RMR = Resting Metabolic Rate (the base number of calories your body will burn per day without any exercise/physical activity), W = weight in kg, H = height in cm, A = age in years

• Harris Benedict Equation
  Men: RMR = 66.47 + 13.75(W) + %(H) - 6.76(A)
  Women: RMR = 655.1 + 9.56(W) + 1.7(H) - 4.7(A)
  For example, a 5'7" (170cm) tall, 40 year old woman, weighing 70kg would work out their RMR as follows:
  RMR = 655.1 + (9.56 x 70) + (1.7 x 170) - (4.7 x 40) = 1425 calories/day


• Mifflin St. Jeor Equation
  Men: RMR = 9.99 x weight + 6.25 x height - 4.92 x age + 5
  Women: RMR = 9.99 x weight + 6.25 x height - 4.92 x age - 161
  For example, a 5'7" (170cm) tall, 40 year old woman, weighing 70kg would work out their RMR as follows:
  RMR = (9.99 x 70) + (6.25 x 170) - (4.92 x 40) - 161 = 1404 calories per day