Stand upright with your arms stretched out to the sides
Measure your wingspan from fingertip to fingertip
Divide the wingspan measurement by 2.5
Use the result as your estimated bow draw length in inches
For a more accurate measurement, draw the bow to full anchor position
Measure from the throat of the grip to the nock point
Add 1.75 inches to that measurement for standard draw length
Confirm the final draw length with a bow shop or coach if needed