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2 different numbers on scooby calks

rlw0031
rlw0031 Posts: 88 Member
in Social Groups
When I plug my stats into the scooby calculator vs the scooby most accurate calculator there is a 100 calorie difference. Should I go with most accurate, Mifflin? The most accurate 15% def. is equal to the regular calculator def. of 20% and I know I am supposed to stick with the 15% or even 10? What calculator do you guys use?

Sorry I misspelled, calks is supposed to be calc. Actually just realized the computer is doing it!

Replies

  • heybales
    heybales Posts: 18,842 Member
    Most accurate is Katch BMR with a decent bodyfat estimate.

    Mifflin is not most accurate, especially when overweight - unless you somehow have maintained the average ratio of fat to muscle mass of healthy weight gal your age and height despite weighing more.

    Are you going to log your foods using an eyeball estimate, or scale?
    Why? Because one is more accurate, right?

    Use the more accurate one.

    Other example, you call several repair shops for rough estimate of cost to fix bodywork on your car.
    You then run by the 3 cheapest for better estimate to compare.
    Once you've gotten those 3, do you still compare by the telephone estimates?
  • rlw0031
    rlw0031 Posts: 88 Member
    Right I want to be the most accurate. That is the problem. I am not certain of my body fat %. When I plugged into the body fat calculator on fat2fit it says 26% but I noticed on other sites online that my body fat % is much higher. So I plugged in both to scooby calc and the low number I got says 2036 calories a day for 10% deficit and when I plug in the higher number it says 1872.

    I began eating 1800 this week.
  • heybales
    heybales Posts: 18,842 Member
    The fat2fit site uses 2 of the more highly rated measurement methods, Covert and military/navy - where they have many measurements.
    Both are about a 5% accurate method, and so take the average of the 2.
    But don't use their TDEE function - while they help get your BF%, let you use it, and display the Katch BMR based on it - their TDEE eating levels are actually based on least accurate Harris BMR, not the Katch BMR.

    If you want to use those, get the BMR based on them, better activity calc, and a place to log the stats for seeing progress, try the spreadsheet on my profile page.
  • rlw0031
    rlw0031 Posts: 88 Member
    Military is 39%! And Covert is 26%. Average of 2 is 32%. I guess I should go with that?

    I used the scooby calc to give me TDEE.

    I cannot access your spreadsheet. Wish I could.
  • heybales
    heybales Posts: 18,842 Member
    That is indeed the average I was talking about to use.

    As you do monthly updates to measurements, you'll likely notice one side of the range is moving faster - that's usually the least accurate side, the smaller movement is more accurate.

    So what could appear to happen is, the avg BF% goes up. In reality you didn't gain fat, it's becoming more accurate and you actually had more prior than estimated. You could end up eating less in that case. (more fat, less LBM, smaller BMR and TDEE, smaller eating goal)

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