Ahhhh, No.
The most accurate way is by a measuring bow. Other than that it has two other different ways which are...
1. By measuring from the web part of your thumb to anchor or
2. By measuring from your index finger's first nuckle to anchor
Two different measurements for people that have different anchor points.
I have been measured from from pro shops and from a Browning Archery Rep. and they all came up with 33".....Or what they like to call "Telephone Pole Length"
Edit to add.......
Oh......and according to that website, since i'm 6' tall my draw should be 29"

If that were the case, i couldn't even stick my tounge out to get an anchor point
That site is
NOT a reliable source of information!