is this accurate

hercules643
hercules643 Posts: 3
in Fitness and Exercise
When I compare the basal metabolic rate on this site to an external one there is like a 400 calorie difference. Does anyone know why?

Replies

  • dinosnopro
    dinosnopro Posts: 2,177 Member
    Not every website uses the same method for figuring it out. I would find more BMR calculator sites and take an average.
  • FitRican
    FitRican Posts: 98 Member
    When I compare the basal metabolic rate on this site to an external one there is like a 400 calorie difference. Does anyone know why?

    Try This:

    Katch-McArdle:Considered the most accurate formula for those who are relatively lean. Use ONLY if you have a good estimate of your bodyfat %. BMR = 370 + (21.6 x LBM)Where LBM = [total weight (kg) x (100 - bodyfat %)]/100

    or this:

    Mifflin-St Jeor: Developed in the 1990s and more realistic in todays settings. It still doesn't take into consideration the differences as a consequence of high BF%. Thus, once again, it OVERESTIMATES NEEDS, ESPECIALLY IN THE OVERWEIGHT.
    MEN: BMR = [9.99 x weight (kg)] + [6.25 x height (cm)] - [4.92 x age (years)] + 5
    WOMEN: BMR = [9.99 x weight (kg)] + [6.25 x height (cm)] - [4.92 x age (years)] -161
  • hercules643
    hercules643 Posts: 3
    Thanks guys

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