Calculating Draw Length - Take this number and divide by 2.5. Also, learn about full draw, anchor points & more! Web use this draw length calculator to quickly find your draw length for shooting your bow. Web how to measure and calculate draw length. Web to determine your draw length, simply measure your armspan from the middle finger of one hand, to the middle finger of your opposite hand. For example, if you have a wingspan of 70 inches, your draw length.
Also, learn about full draw, anchor points & more! Web to determine your draw length, simply measure your armspan from the middle finger of one hand, to the middle finger of your opposite hand. Web use this draw length calculator to quickly find your draw length for shooting your bow. For example, if you have a wingspan of 70 inches, your draw length. Web how to measure and calculate draw length. Take this number and divide by 2.5.