Draw Length
Calculate your ideal archery draw length from your wingspan. Get recommended bow size and arrow length for comfortable, accurate shooting.
About This Calculator
The Draw Length Calculator helps archers determine their ideal bow draw length based on their wingspan. Draw length is the distance from the nocking point on the bowstring to the grip's pivot point when the bow is fully drawn. This measurement is essential for selecting the right bow and arrows, ensuring comfort, accuracy, and injury prevention in archery.
The calculator uses the standard archery formula: Draw Length = Wingspan ÷ 2.5. Simply measure your wingspan — the distance from the tip of one middle finger to the tip of the other with arms fully extended — and enter it in inches. The tool instantly calculates your draw length along with recommended bow size and arrow length. For example, a wingspan of 70 inches yields a draw length of 28 inches, a recommended bow size of 30 inches, and arrows approximately 29.5 inches long.
Regional Notes
Worldwide (Archery): The wingspan-to-draw-length formula (wingspan ÷ 2.5) is universally accepted across all archery disciplines including target archery, field archery, bowhunting, and 3D archery. Draw length is always measured in inches regardless of country, as arrow and bow manufacturers worldwide use imperial measurements. Both compound and recurve archers use this formula as a starting point; compound bow users should verify with a professional bow press fitting for precise module settings, while recurve archers may adjust slightly based on shooting style and arrow spine.
Frequently Asked Questions
What is draw length in archery?
Draw length is the distance measured from the nocking point on the bowstring to the grip's pivot point when the bowstring is fully drawn back. It is a critical measurement for choosing the right bow and arrows for your body size, ensuring comfort, accuracy, and injury prevention in archery.
How do I calculate my draw length?
Measure your wingspan (distance from tip of one middle finger to the other with arms extended horizontally) in inches, then divide by 2.5. For example, a 70-inch wingspan gives a draw length of 28 inches.
Why is draw length important in archery?
Proper draw length ensures correct equipment fit, better accuracy, consistent anchor points, and prevents injury. A draw length that is too short causes unstable shots, while one that is too long leads to overextension and poor form.
How do I choose arrows based on my draw length?
Your arrow length should be 1 to 2 inches longer than your draw length. This ensures safety during archery and helps achieve optimal performance and energy transfer.
What bow size do I need for my draw length?
A general rule is to add 2 inches to your draw length for the recommended bow size. For example, a 28-inch draw length suggests a 30-inch bow. Always consult your bow manufacturer's sizing chart for the exact fit.
Can I calculate draw length from height instead of wingspan?
While wingspan is the most accurate method, you can estimate draw length from height: divide your height in inches by 2.5 as a rough approximation. However, wingspan measurement is preferred since arm span to height ratios vary individually.
What happens if my draw length is wrong?
A draw length that is too short reduces arrow speed and power while causing unstable shots. A draw length that is too long can cause overextension, muscle strain, poor accuracy, and increased risk of shoulder or back injuries.
How is draw length measured on a bow?
Draw length is measured from the nocking point on the bowstring to the deepest part of the grip (pivot point) plus 1.75 inches. Compound bows have a mechanical stop at full draw, while recurve bows require the archer to maintain consistent form.