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03-07-2006, 12:29 PM | #1 |
Join Date: Jan 2006
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Calculating Weight in Relation to Height
having a brain cramp and I've seen this posted on various RPG forums over the years.
I'm trying to get a rough formula to calculate a persons weight based on their height. so a 6 foot, 200 lb man growing 1 foot will be 7 feet tall and approx ? same with shrinking by the same amount. thanks. |
03-07-2006, 01:29 PM | #2 |
Join Date: Sep 2004
Location: Lexington, KY
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Re: Calculating Weight in Relation to Height
Assuming proportionate change in all three dimensions, growing 1 foot will result in a weight of (7/6)^3 * 200 lbs., or roughly 318 lbs; shrinking 1 foot will result in a weight of (5/6)^3 * 200 lbs., or roughly 116 lbs.
Last edited by thastygliax; 03-07-2006 at 01:32 PM. |
03-07-2006, 02:33 PM | #3 |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Calculating Weight in Relation to Height
Note that typically creatures do not grow in all dimensions equally. For a human, it's closer to the 2.5 power of height
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03-07-2006, 03:44 PM | #4 |
Join Date: Jan 2005
Location: Stuttgart, Germany
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Re: Calculating Weight in Relation to Height
And of course, you could go by BMI (Body Mass Index).
BMI is calculated by dividing a person's weight (in kilograms) by his or her height (in meters, squared). BMI can also be calculated by multiplying weight (in pounds) by 705, then dividing by height (in inches) twice. So a 6 foot, 200 lb man has a BMI of (200*705/72^2) = 27.2 (clinically overweight) A 7 foot man with a BMI of 27.2 would weigh (27.2*84^2)/705 = 272 lbs A 5 foot man with a BMI of 27.2 would weigh (27.2*60^2)/705 = 139 lbs |
03-07-2006, 04:05 PM | #5 | ||
Join Date: Jan 2006
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Re: Calculating Weight in Relation to Height
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03-07-2006, 04:18 PM | #6 | |
Join Date: Jan 2005
Location: Stuttgart, Germany
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Re: Calculating Weight in Relation to Height
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Just offering a formula which is tailor made for human body masses at different heights. You wouldn't need a table, you'd just have to calculate BMI for base form, then derive final weight as I showed above, just two very basic calculations. Then again, you should just go with whatever you find easier to use, especially if pseudo-realism isn't a big issue.
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Violence, naked force, has settled more issues in history than has any other factor, and the contrary opinion is wishful thinking at its worst. -RAH |
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05-15-2019, 01:11 PM | #7 |
Join Date: Oct 2007
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Re: Calculating Weight in Relation to Height
er how do I input that into my comps calculator? (particuarly "cubing" a number)
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05-15-2019, 01:28 PM | #8 |
Join Date: Jun 2005
Location: Lawrence, KS
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Re: Calculating Weight in Relation to Height
Is it a scientific calculator, or does it just add, subtract, multiply, and divide? And do you have Excel or another spreadsheet as an option?
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Bill Stoddard I don't think we're in Oz any more. |
05-15-2019, 01:36 PM | #9 | |
Join Date: Aug 2004
Location: Nashville, TN
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Re: Calculating Weight in Relation to Height
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(7/6)^3, if you don't have an explicit raise-to-power feature for some reason, is just (7/6)*(7/6)*(7/6). Holy thread necromancy, Batman!
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I didn't realize who I was until I stopped being who I wasn't. Formerly known as Bookman- forum name changed 1/3/2018. |
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05-15-2019, 01:39 PM | #10 | |
Join Date: Aug 2007
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Re: Calculating Weight in Relation to Height
Quote:
For example going from 6 to 7 ft is a 1,16 percent increase in height. so 1.16 x 1.16 x 1.16 equals 1.56 percent increase in weight. That would take you from 200 lbs to 312 lbs.
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Fred Brackin |
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