I need to know how to figure arrow length?

Determining Correct Arrow Length
The Correct Arrow Length for any type bow (including bows equipped with overdraws) is determined by drawing back an extra-long arrow and having someone mark the arrow one inch in front of where the arrow contacts the arrow rest. This is from Beamans website.

Thanks

Arrow length is determined to me by two factors wether I'm shooting longbow or compound.

1: Personally, I won't cut an arrow shorter then about 1/4" past my knuckles on by bow hand. I use fixed broadheads, and this adds a bit of safety.

2: If my bow is not tuned, I start with an arrow which is longer then what I need. This can be helpful among other things in getting the correct tune from your bow. I.E. you can stiffen the reactionof your arrow by incrementally decreasing the length.

I do what Bob does...... I personally like about 2 inches past the riser on my longbow.... I the gap picturethat it gives me at 20yds......