Draw Length can be determined by a measurement known as ' wingspan.' This is simply a measurement and has nothing to do with how you actually draw back your bow.
How to measure your wingspan:
1) Lean against a wall, standing as close to the wall as possible with back flat.
2) Extend your arms and fingers out as far as possible
3) Have someone make a pencil mark at the end of both your fingers tips
4) Measure this distance
This is your wingspan. Find this number in the chart below to find its matching Draw Length. (For example, a wingspan of 67" would be a draw length of 26" )
Wingspan Draw Length
(inches) (inches)
63 24
64 24 1/2
65 25
66 25 1/2
67-----------------------------------------------26
68 26 1/2
69 27
70 27 1/2
71 28
72 28 1/2
73 29
74 29 1/2
75 30
76 30 1/2
77 31
78 31 1/2
*** The Most Common Draw Length is 29 inches.
I believe this is a quote from either Pinwheel or Field14.