How to Measure Your Draw Length (3 Accurate Methods)

Draw length is the distance, in inches, from the string at full draw to the throat of your grip — plus 1.75" under the standard AMO convention. Sounds dry. It isn't. Too long and your anchor gets pushed off your face, and consistency goes with it. Too short and you lose power and any hope of a clean release. Compound shooters, pay extra attention here: your bow's mechanical stop is set to one fixed length, so there's no fudging it at full draw.

Method 1 — Wingspan math (quick estimate)

Stand naturally, arms out in a T, palms facing forward. Get someone to measure your full arm span, fingertip to fingertip, in inches. Divide by 2.5. So a 70-inch wingspan works out to roughly a 28-inch draw. That's it. But treat this as a starting point, not your final answer.

Method 2 — The fist-on-the-wall trick

Make a fist. Press it against a wall at shoulder height, then turn your head and look down your arm like you're aiming. Now measure from the wall to the corner of your mouth — a common anchor point. Why bother? Because this mimics your actual shooting posture, which the wingspan formula knows nothing about.

Method 3 — Get measured at a pro shop (the real answer)

This is the accurate one. The shop hands you a light bow with a long, marked 'draw-check' arrow, you draw to your real anchor, and they read the number right off the shaft. It captures your individual form, your anchor, your release — the stuff no formula can see.

Why an inch matters more than you'd think

One inch of error. That's all it takes to change where the string sits against your face, how your release hand anchors, and your back tension. So measure with at least two methods and cross-check the results. And if you shoot compound, set the bow to the verified number before you tune anything else — every other adjustment depends on a correct draw length.