I'm only 5'9" tall, but I've got long arms for my height which makes me a knuckle dragger. With that said, my draw length is 30" to the front of the arrow shelf (farthest from me). I then add 2" of arrow length to keep a razor sharp broadhead from touching the knuckles of my hand that holds the bow out in front of the arrow shelf at full draw.
With a normal bow, not a forward handle or the deep convex handle of a horse bow, it's easy to find your draw length. I measure my draw length to the front of the shelf.
Just take a clothes pin and attach it vertically where the total length of the clothes pin is under your full length arrow shaft about 9" from the tip of the arrow shaft.
As you draw the arrow shaft, when the vertical clothes pin touches the front of the shelf (farthest from you), it will keep sliding forward and stop sliding forward when you come to your anchor point. Then, just measure from the valley of the arrow nock to the clothes pin and that's your draw length. Do it a few times to get a consistent draw length.