What is draw length in archery?
Draw length describes how far you pull the bowstring at full draw. The AMO measurement runs from the nock throat to the grip's pivot point, then adds 1.75 inches. A compound bow has a set draw length; on a recurve, your posture and anchor determine where the draw ends.
What the AMO measurement includes
The pivot point is the deepest part of the grip, where the web of your bow hand sits. Measure from the throat of the nock to that point along the arrow line at full draw, then add 1.75 inches. For example, a 26.25-inch measurement to the pivot point gives a 28-inch AMO draw length.
The extra 1.75 inches is part of the AMO industry standard. The front of your riser may sit somewhere else, so measuring to that edge can give a different result. Check which reference a chart asks for before entering your measurement.
Estimating your starting fit
Measure wingspan from fingertip to fingertip while standing with both arms level and naturally extended. Divide the measurement in inches by 2.5. A 70-inch wingspan gives a 28-inch estimate. The draw length calculator uses this starting rule.
Body proportions and shooting style can move the fitted result away from that estimate. At a shop or club, use a purpose-made measuring arrow or a fitting setup with qualified help. Keep the bow directed at a safe backstop and never release a measuring setup unless it is intended for shooting.
Your anchor point should be reachable with a repeatable head position. Reaching your chin toward the string, leaning back, or stretching the bow shoulder forward can hide a fit problem. Have someone check your posture from the side.
Compound settings and recurve expansion
A compound's cams, modules, and draw stops establish the end of the draw. A setting that is too long can leave you overextended at the wall. One that is too short can crowd the draw arm and anchor. Adjustments depend on the bow, so follow its manual or have a technician fit it.
A recurve has no compound-style wall. As you draw farther, draw weight generally rises. A consistent draw therefore helps keep both the body position and the energy of the shot repeatable. A clicker can provide a draw-length reference after you establish a workable technique.
Arrow length needs its own check. Rest position, point design, and clicker placement affect how much shaft you need in front of the bow. Before cutting arrows, confirm that the shaft remains safely supported at your full draw, including the small continued draw movement you use to finish the shot.
Questions
Is draw length the same as arrow length?
No. Draw length describes the bow and archer at full draw, while arrow length describes the arrow itself. A safe arrow must remain supported by the rest through your draw. Its required length depends on the bow setup, so do not cut arrows directly to a wingspan estimate.
Does a longer D-loop change compound draw length?
A longer D-loop moves the release hand farther behind the string at full draw. It can change how your anchor feels, but it does not change the bow's AMO draw length or move the cam stops. Assess loop length and the bow's draw setting as separate parts of the fit.
Should I change draw length when I change my anchor?
Recheck the fit if you make a substantial anchor or release-aid change. You may need an adjustment, but measure first with your posture settled. On a recurve, confirm actual draw weight and arrow support too. A new facial reference should not require you to strain to reach the string.