Different results using the 2 scooby calculators

toki18

Hi,

Just a bit confused about which Scooby calculator to use - I've seen click through links for both the World’s Most Accurate Calorie Calculator + Free Fat Loss Calorie Calculator.

They both give me different TDEE results when I put in precisely the same info.
I was wondering if there is general consensus for which calculator to follow - sorry if this has been cleared up before but I can't seem to find it.

Free Fat Loss Calorie Calculator- 2129 - TDEE
http://scoobysworkshop.com/calorie-calculator/

World’s Most Accurate Calorie Calculator - 1994 - TDEE
http://scoobysworkshop.com/accurate-calorie-calculator/

... Or maybe I've just missed something - my stats are: 63inches - 29yrs - 130 pounds with 3-5hours of moderate exercise.

Thanks for any help

heybales

First - realize these are all estimates - some better than others.
Your only true measurement of BMR is a night time test early morning in the lab.
Your only true TDEE measurement would be a double-labeled water study with research lab over the course of several days, weighing what you drink with specially marked hydrogen atoms, and collecting all your waste for them to see how much came out that way, as opposed to burned up and in your air.

The first one uses estimate from Harris BMR equation - from original 1919 study that came up with the TDEE levels too. Found most inaccurate today, as it doesn't scale well for being overweight. Study was on healthy weight participants.

The second one uses Mifflin BMR like MFP does as default - update in '80's and found to be 5% more accurate, and scales better when overweight. Still uses that 1919 TDEE table though.

The second one could give an even better estimate if you had a decent estimate of bodyfat % and then could select Katch BMR calc.

So without BF%, the second set of numbers are better estimate.

Be aware that TDEE table is based on exercise on top of otherwise sedentary daily life - 45 hr deskjob/commute, no kids or pets or lawn care, not much shopping or cleaning, ect.
If you aren't otherwise sedentary, then your activity level is one higher.

toki18

heybales wrote: »

Be aware that TDEE table is based on exercise on top of otherwise sedentary daily life - 45 hr deskjob/commute, no kids or pets or lawn care, not much shopping or cleaning, ect.
If you aren't otherwise sedentary, then your activity level is one higher.

Thanks for the feedback, unfortunately I don't have an accurate BF% so I think I will stick with the 2nd estimate and see how I fare with that.

I just wanted to double check on the quoted bit above. I do have a job with a desk but I rarely sit; walk everywhere (including my commute) - average step count without exercise is 6000 steps and I do all the household chores. Adding in my 3-5 hours at the gym you would go with: 5-6 hrs/wk of strenuous exercise + World’s Most Accurate Calorie Calculator?

thanks again

heybales

You got it.
Sounds like life outside exercise is Lightly Active already.
Exercise by itself is Moderately Active.
Both together is one higher.

And you don't need accurate for BF%, within 5%, which could be 7-site skinfold in the hands of experienced person, or BIA scale with proper hydration levels, or multi-measurement calcs.
Like this.
www.gymgoal.com/dtool_fat.html

toki18

brilliant thanks for the help