TDEE Calculations using Lean Mass usually being done wrong

[Bertuzzi]

***EDIT***

After further review (IN THE SHOWER) I realized that however my math is correct it is not correct in determining your LBM. This formula is for other percentages... Please disregard my brain fart.





So I've been away for a bit and since I've come back I noticed everyone using the method of LBM x 15 to calculate your TDEE as compared to:

{13.7 x Body weight in KG's + 5 x your height in CM's - 6.8 x your age}

I always felt the equation above always gave you a high TDEE, so I just allowed for a greater caloric deficit and it seemed to work.

Now I see everyone talking about LBM x 15 or possibly 14 if you're not very active, and 16 if you're insane active.... but 15 to be safe.

When I first calculated my TDEE using this method I felt it was low, this is what I got and how I got it and how everyone I've seen on here do it.

-Weight = 250
-BF % = 25
-25% of 250 is 62.5
-250 - 62.5 = 187.5
-187.5 x 15 = 2812.5

So, my maintenance caloric intake should be 2812.5, right???



Wrong....


Okay, I work with numbers all day but now I have computers for what I do, which goes to prove technology can advance us or set some of us back.... I guess I went a bit stupid since I don't do anything with pen and paper anymore.

The real way to do is:

-Weight = 250
-BF % = 25
-250 / 1.25 = 200 <---- this is my Lean Body Mass not 187.5. That's actually how you subtract percentage... I just forgot and obviously a lot of you have too, maybe not all of you.
-200 x 15 = 3000

*EDIT* - The 1.25 is the 25% so if you were 18% BF you would divide by 1.18. Just to be clear.

So 3000 cal would be my actual daily maintenance not 2812.5.

Some of you may call this negligible because TDEE is still kind of a guess and you'll need to tweak it to your own body, but either way we should be doing it the right way..... Just wanted to share that with everyone for help with future calculations.

[MickeyKnox]

If i won 250$ and had to give you 25%, how much would i have to give you?

[kronik420]

calculating TDEE's still confuses me, this just makes it more confusing....

luckily i don't count calories lol... i just go by, if im loosing weight then i must be eating less than maintenance, and vise versa..

[kronik420]

If i won 250$ and had to give you 25%, how much would i have to give you?

you'd have to give me 525$ yea?

[MickeyKnox]

lol ^^

[--->>405<<---]

Bert i love u and everything my man but did u just make that long ass post to try to tell everyone else their math was incorrect when in actuality u are the one who is WRONG!!!!! ??

250lbs 25%bf

total weight = 100%

fat weight = 25%

total weight (100%) - fat weight (25%) = 75% LBM

250(how much u weigh in pounds) x .75(%LBM) = 187.5(lbs LBM)

187.5 x 15 = 2812.5cals (rough starting maintenance)

^^while this indeed may not be an accurate representation of ur true maintenance cals due to the fact that ur metabolic rate does not fit into the equation as most of ours do the math is right! remember this is simply a starting maintenance estimate and IMO a lot better than the inaccurate, faulty activity multiplier of 1.55 which usually gives u too many calories.

personally id rather have to eat more food than burn off unwanted fat!

[--->>405<<---]

where did u even get 1.25 from???????

[Bertuzzi]

Lol.... you are correct, I did make that long ass post just for math.... if you new me in real life you'd understand

where did u even get 1.25 from???????

1.25 is the 25% of your body fat.... (sorry I should have been more clear here, I edited the original post) trust me i'm right. Look up how do subtract percentages or ask a math teacher... I am a finance manager.... this is what I do for a living.

I just did a quick google search and came up with a Yahoo answers page that explains it in a different form... the first 2 answers on the page are correct but as you can see.... 13 people answered it and the majority of them were wrong...

http://answers.yahoo.com/question/in...0163048AAU98KD

I know what I wrote seems wrong but look at it this way.

Take your pay check take your gross pay and divide it by whatever percent income tax you pay so lets say you pay 27% income tax you'd go {gross pay / 1.27} that will give you your gross pay minus your tax... if you make $3000 a month and pay 27% tax your tax amount would not be $810 it would be $637.80.

Like I said I do this stuff for a living and even I got caught up in doing it wrong....

I just wanted to point it out.... some may find it stupid some may be appreciative... I just wanted to inform.

Sorry, I'm anal about these things.

Much Love and Respect though.

[Bertuzzi]

and I agree with you about this just being a guideline as I stated in my original post... just want to make sure people were calculate their LBM properly... its nice to know that I have 12.5lbs of LM than I thought I did

SO I guess I should have called this post.... "The proper equation to calculate LBM" instead of bringing TDEE in the mix.... my bad.

[gbrice75]

So I've been away for a bit and since I've come back I noticed everyone using the method of LBM x 15 to calculate your TDEE

*ahem* - you're all welcome.

[--->>405<<---]

dude i still think ur wrong.. 25% is 25% no matter how u slice it!

25% = 1/4 are we in agreement on this??

1/4 of 250 = 250/4 = 62.5

250 - 62.5 = 187.5

i dont care what formula u come up with

187.5 x 15 = 2812.5

the link u provided is showing how to get a base price of a product after the sales tax has been added on. thats a totally different equation than what were doing. if u buy something for $10.00 and the sales tax is 10% then the total price of the product would be $11.00

the formula ur using is to figure out how much that product (which was $11.00 out the door) cost before the sales tax was added on.. NOT the same thing!

u need to re-think this buddy! if theres one thing i know its math!

[--->>405<<---]

*ahem* - you're all welcome.

ALL HAIL AND GLORY BE DUE TO YOU OH WISE CALORIC MASTER!

[Henryhill470]

Is there a sticky on how to calculate your TDEE ?


If so can someone post it ?

Thanks fellas

[--->>405<<---]

rough starting maintenance = (LBM x 15)

[sgt2jay]

i have to ask this and it may makethings easier. when using either method the two of you have come up with i get about a 200 calories difference.
If these are rough maintenenace clacutlations and we adjust as needed from that number. does it really matter which one you use?

[--->>405<<---]

i have to ask this and it may makethings easier. when using either method the two of you have come up with i get about a 200 calories difference.
If these are rough maintenenace clacutlations and we adjust as needed from that number. does it really matter which one you use?

i dont suppose so but its the principle sgt.. he started this thread to make a correction to math that did NOT need correcting! his example proves it. i just want to make sure this is emphasized.

the math i have set is the correct math his math is WRONG, INCORRECT..

i take my math very seriously! dont mess with my math!

and on second thought sgt YES it matters a lot and ill tell u why, based on his INCORRECT math he is giving himself an additional 12.5lbs LBM.. a mistake that does NOT need to be made!

[digsy1983]

25% in decimal form is 0.25. This is 1% = 1 unit.

Your calculation involving 1.25. Is calculating 125%. NOT 25%.

I'm an engineer and this is how I've done % both at work and in my college courses.

[--->>405<<---]

25% in decimal form is 0.25. This is 1% = 1 unit.

Your calculation involving 1.25. Is calculating 125%. NOT 25%.

I'm an engineer and this is how I've done % both at work and in my college courses.

finally someone else who gets it! chek the link he posted digsy. its how u subtract sales tax from an item purchased after the tax has been added in an effort to get back to the original price. not even the same thing at all!

[Bertuzzi]

Okay... well lets agree to disagree... it's only a couple hundreded calories anyways.

Some seem to be taking this personally, and I honestly did not intend to do this. I apologize and for the sake of things... I'll go with "I'm wrong" if it will make everyone happy. I'll calculate it my way, you guys do it your way... it is not a big deal.

I do not want to start a fight or make this anymore personal than it has.... the big bold letters is kind of like you puffing your chest up and yelling in my face (if we were face to face) and honestly, I'm not looking for confrontation. I was just looking to help some people.

We can all calculate our LBM how we want... for any who want further clarification, if you know math prof... ask them how to subtract percentages from a whole number and you'll have your answer.

Good Luck,

Bert

P.S

NO hard feelings... I understand passion... I'm the same way

[bigsiv]

Okay... well lets agree to disagree... it's only a couple hundreded calories anyways.

Some seem to be taking this personally, and I honestly did not intend to do this. I apologize and for the sake of things... I'll go with "I'm wrong" if it will make everyone happy. I'll calculate it my way, you guys do it your way... it is not a big deal.

I do not want to start a fight or make this anymore personal than it has.... the big bold letters is kind of like you puffing your chest up and yelling in my face (if we were face to face) and honestly, I'm not looking for confrontation. I was just looking to help some people.

We can all calculate our LBM how we want... for any who want further clarification, if you know math prof... ask them how to subtract percentages from a whole number and you'll have your answer.

Good Luck,

Bert

P.S

NO hard feelings... I understand passion... I'm the same way

Sorry but to add to this you are wrong buddy.

25% of 250 is 62.5 any way you look at it
250 - 62.5 = 187.5 any way you do it

You could also do 250 x 0.75 = 187.5

No matter but if you are gonna come and do a thread stating that people are wrong but in actual fact you were wrong then you were bound to ruffle a few feathers lol

[Bertuzzi]

Sorry but to add to this you are wrong buddy.

25% of 250 is 62.5 any way you look at it
250 - 62.5 = 187.5 any way you do it

You could also do 250 x 0.75 = 187.5

No matter but if you are gonna come and do a thread stating that people are wrong but in actual fact you were wrong then you were bound to ruffle a few feathers lol

Just spend 15 minutes researching how to subtract a percentage from a whole number... on a credible website or credible source before you come adding to this thread. I will not continue to argue who is right or wrong but I will tell you to do some research before offering an opinion.

I was doing it the same way all of you were doing it for a long time... then I had to do some math at work old school style and it it hit me.... Just saying....

[--->>405<<---]

hey bert no prob man and im not mad LOL. BUT i want to make clear for everyone else reading this that ur calculations are WRONG.. hence the big bold letters. not yelling just wanting everyone else to see whats important.

u started this thread out of trying to do something nice and i appreciate that, however, by attempting to correct a formula/method ive been using on here for many months on a daily basis u are undermining my calculations and i cant let that happen i dont care who it is..

it appears u did not read my entire post above so i will say it for one last time:

the link u provided and ur formula is for removing sales tax (or whatever tax/percentage of ur choosing) from a total price after it has already been added in for the sake of being able to calculate the original price of the item prior to sales tax (or whatever tax it is) being added. it is NOT the same thing.

if u weigh 100lbs and have 25%body fat then u have 75lbs LBM NOT 80lbs LBM like ur formula leads to believe. its wrong i dont know how else to say it!

i suggest u re-read my explanation. we can agree to disagree but just know u are incorrect sir. i simply dont want anyone else following ur inaccurate calculations.

[bigsiv]

Just spend 15 minutes researching how to subtract a percentage from a whole number... on a credible website or credible source before you come adding to this thread. I will not continue to argue who is right or wrong but I will tell you to do some research before offering an opinion.

I was doing it the same way all of you were doing it for a long time... then I had to do some math at work old school style and it it hit me.... Just saying....

I don't need a credible source I went to school aced maths got an A level in mathematics and distinction HNC Mathematics in university. It's common sense buddy you are wrong it's not a question of agreeing to disagree its a question of you being wrong!!!

[MickeyKnox]

Just spend 15 minutes researching how to subtract a percentage from a whole number... on a credible website or credible source before you come adding to this thread. I will not continue to argue who is right or wrong but I will tell you to do some research before offering an opinion.

I was doing it the same way all of you were doing it for a long time... then I had to do some math at work old school style and it it hit me.... Just saying....

Bert you're a good guy. But i cant believe you're still arguing the world is flat?? What is 25% of 100? 25, correct? It really is that simple. YOU are complicating it.

This reminds me of a popular mathematical joke:

Three men pay 30$ for a room - 10$ each.
Later the manager sends the bellboy with a 5$ refund for the group of men.
But the bellboy keeps 2$ and each man gets 1$.
So, each man paid 9.00, the bellboy kept 2.00 - where's the other dollar??

[Bertuzzi]

hey bert no prob man and im not mad LOL. BUT i want to make clear for everyone else reading this that ur calculations are WRONG.. hence the big bold letters. not yelling just wanting everyone else to see whats important.

u started this thread out of trying to do something nice and i appreciate that, however, by attempting to correct a formula/method ive been using on here for many months on a daily basis u are undermining my calculations and i cant let that happen i dont care who it is..

it appears u did not read my entire post above so i will say it for one last time:

the link u provided and ur formula is for removing sales tax (or whatever tax/percentage of ur choosing) from a total price after it has already been added in for the sake of being able to calculate the original price of the item prior to sales tax (or whatever tax it is) being added. it is NOT the same thing.

if u weigh 100lbs and have 25%body fat then u have 75lbs LBM NOT 80lbs LBM like ur formula leads to believe. its wrong i dont know how else to say it!

i suggest u re-read my explanation. we can agree to disagree but just know u are incorrect sir. i simply dont want anyone else following ur inaccurate calculations.

Okay, so here it is... you're right I did not read your original post all the way through and now that I have, I see what you're saying. This is what happened

I was doing the math at work because I was determining income tax related numbers and realized to subtract tax I had to minus the percent by dividing it by 1.? and because it just hit me, I quickly did my LBM and got to my TDEE of 300 and thought that seems more realistic for my body, and just went with it.

I literally just got out of shower and while I was in there I realized how the 2 different maths do not work in these 2 different situations... kind of like the question Mickey asked... It just didn't hit me right away cuz I was caught up in my new found way of getting a more accurate TDEE for myself.

My math is correct just not in determining LBM.... Lets just call this a giant Brain fart and I'm glad you guys were so determined to help me pull my head out of my ass. For the record I will continue to use my way for me, only because it seems to be more accurate for me and my body.... however

the math is not correct in determining this formula. I just got excited and caught up in the moment

My bad....

I have edited my original post.

Bert

[MickeyKnox]

Its all good brother. You just needed a gentle push in the right direction.

[Bertuzzi]

Its all good brother. You just needed a gentle push in the right direction.

LOL... I got caught up in the moment.... and honestly I really and good at math... like ninja good.... just don't know how I got myself confused... I can't make excuses, just have to accept blame.

[bigsiv]

LOL... I got caught up in the moment.... and honestly I really and good at math... like ninja good.... just don't know how I got myself confused... I can't make excuses, just have to accept blame.

I got caught up as well bertuzzi hope I didn't come across as an arse if I did apologies its all good.

To Mickey that joke is no fun I can't work out where the other dollar went lol

[Bertuzzi]

I got caught up as well bertuzzi hope I didn't come across as an arse if I did apologies its all good.

To Mickey that joke is no fun I can't work out where the other dollar went lol

All good.... I started it

I love that old math joke mickey... and you're right.... this is kind of like that.

[--->>405<<---]

no hard feelings bert! im just glad we got it resolved! thx for ur acknowledgement!

[sgt2jay]

i dont suppose so but its the principle sgt.. he started this thread to make a correction to math that did NOT need correcting! his example proves it. i just want to make sure this is emphasized.

the math i have set is the correct math his math is WRONG, INCORRECT..

i take my math very seriously! dont mess with my math!

and on second thought sgt YES it matters a lot and ill tell u why, based on his INCORRECT math he is giving himself an additional 12.5lbs LBM.. a mistake that does NOT need to be made!

got it. i didnt meant to offend i was just trying to add a bit of fun to the topic. seems all is worked out.

[--->>405<<---]

got it. i didnt meant to offend i was just trying to add a bit of fun to the topic. seems all is worked out.

no offense taken pal! the bold highlights the important points so they srent overlooked, its not me "yelling"