Arrow Length Calculator
Calculate the correct arrow length for your draw length.
Essential for safety and proper arrow spine selection.
Works for compound, recurve, and traditional bows.
⚠️ Safety first: It's always better to have arrows slightly too long than too short. Short arrows can fall off the rest and cause serious injury.
Example calculation
Let's find the correct arrow length for a typical recurve archer:
| Measurement | Value |
|---|---|
| Bow type | Recurve bow |
| Draw length | 28.5 inches |
| Shooting style | Target archery |
| Recommended clearance | 1.5-2 inches (recurve standard) |
| Recommended arrow length | 30.5 inches |
Formula: Draw length (28.5") + Clearance (2") = 30.5" arrow length (measured from nock throat to end of shaft)
Understanding arrow length
How arrow length is measured
Arrow length is measured from the nock throat (the deepest part of the nock where the bowstring sits) to the end of the arrow shaft. This measurement does NOT include the point, insert, or any part of the nock that extends beyond the throat.
This is the industry standard measurement used by all arrow manufacturers and spine charts. When you order arrows that are "29 inches," you're ordering arrows that measure 29 inches from nock throat to shaft end.
Why arrow length matters for safety
Arrow length is critical for safety. Your arrows must extend past your arrow rest when you're at full draw. If arrows are too short, they can:
- Fall off the rest during the draw, causing a dangerous dry-fire or partial release
- Shatter on release if they don't clear the bow properly, sending shards into your hand or face
- Damage your bow by striking the riser, rest, or cables during release
- Cause inconsistent arrow flight and poor accuracy due to inadequate clearance
Professional archers and bow shops always recommend adding 1-2 inches of clearance beyond your draw length. This safety margin accounts for slight variations in your form, different anchor points, and prevents dangerous situations.
Arrow length affects spine
Arrow length directly impacts effective spine (arrow stiffness). Longer arrows flex more easily (act weaker), while shorter arrows flex less (act stiffer). This is why you must know your arrow length before selecting arrow spine.
If you cut arrows shorter after purchase, you're effectively making them stiffer. This can throw off your spine selection and cause accuracy problems. Always use our arrow spine calculator with your intended arrow length to ensure proper spine selection.
How to measure draw length for arrow length
📏 Method 1: Wingspan method
Stand with arms outstretched, measure fingertip to fingertip. Divide by 2.5. Example: 70" wingspan ÷ 2.5 = 28" draw length.
🧱 Method 2: Wall method
Draw your bow with your back against a wall. Have someone mark where the nock point is. Measure from wall to mark. Add 1.75" for AMO draw length.
🎯 Method 3: Pro shop measurement
Visit an archery pro shop for a professional draw length measurement. They'll use a draw board or draw check arrow for precise results.
📐 Method 4: Existing arrows
If you have arrows that fit well, measure from nock throat to where the arrow passes the front of the riser at full draw. That's your minimum arrow length.
🛒 Once you know your arrow length, shop arrows on Amazon or visit your local pro shop. Most shops offer arrow cutting services if you need custom lengths.
Arrow length recommendations by bow type
Compound bows
Compound bows can safely use shorter arrows due to their consistent draw length and let-off. Most compound shooters add 1-1.5 inches to their draw length for safety clearance.
| Draw Length | Recommended Arrow Length |
|---|---|
| 26" | 27-27.5" |
| 27" | 28-28.5" |
| 28" | 29-29.5" |
| 29" | 30-30.5" |
| 30" | 31-31.5" |
| 31" | 32-32.5" |
For hunting with mechanical broadheads, add an extra 0.5" for clearance past your rest and cables.
Recurve bows (Olympic & barebow)
Recurve archers typically add 1.5-2 inches to draw length because recurves don't have let-off and draw length can vary slightly with different anchor points or form. This extra clearance prevents dangerous situations if you accidentally overdraw.
Olympic recurve archers often use arrows on the longer side (2 inches past draw length) for maximum safety and consistency. The extra length doesn't significantly impact accuracy at target distances.
Traditional longbows and self bows
Traditional archers should use the most conservative arrow lengths: 2-3 inches past draw length. Traditional shooting styles often involve instinctive shooting, gap shooting, or other methods where draw length can vary between shots.
Additionally, traditional bows shot off the shelf (no arrow rest) need extra clearance to ensure arrows don't fall off during the draw or strike the bow hand on release.
Common arrow length mistakes to avoid
❌ Cutting arrows too short
The most dangerous mistake. Some archers cut arrows very short to reduce weight or achieve a specific spine. This is extremely risky. Never cut arrows shorter than 1 inch past your arrow rest at full draw. If you need lighter arrows, use lighter points or thinner shaft diameters instead.
❌ Measuring to the point instead of shaft end
Arrow length is measured to the end of the shaft, not including the point. If you measure to the tip of a field point, you'll order arrows that are 1-2 inches too short, which is dangerous.
❌ Not accounting for form changes
Beginners' draw lengths often change as their form improves. New archers frequently creep forward (shorten draw length) or develop better back tension (lengthen draw length). If you're new to archery, order arrows slightly longer than you think you need.
❌ Using arrows from a different bow type
Arrows that were safe for your old recurve might be dangerously short for your new compound (or vice versa). Always recalculate arrow length when switching bow types or changing draw length.
❌ Forgetting about broadhead clearance
Fixed-blade broadheads are wider than field points. If your arrows barely clear your rest with field points, they might strike the rest or cables when you switch to broadheads for hunting. Add 0.5-1" extra length if you hunt with fixed-blade broadheads.
Arrow length calculator FAQs
How do I measure my arrow length?
Arrow length is measured from the nock's throat (where the string sits) to the end of the arrow shaft, not including the point. This is the industry standard measurement. Your arrows should extend 1-2 inches past your arrow rest at full draw for safety.
What happens if my arrows are too short?
Arrows that are too short are extremely dangerous. If an arrow falls off the rest during the draw or doesn't clear the bow properly, it can shatter on release, sending carbon or aluminum shards into your hand, arm, or face. Always err on the side of arrows being slightly longer. Shop safe carbon arrows on Amazon.
Can I cut arrows shorter after I buy them?
Yes, arrows can be cut shorter with an arrow saw. However, cutting arrows makes them effectively stiffer (changes spine). Only cut arrows if you've confirmed the spine will still be appropriate for your setup. Never cut arrows shorter than 1 inch past your rest at full draw. Use our arrow spine calculator to verify spine after cutting.
Do different bow types need different arrow lengths?
Yes. Compound bows can use shorter arrows (draw length + 1-1.5") because of their consistent draw length and let-off. Recurve and traditional bows need longer arrows (draw length + 1.5-2.5") because draw length can vary slightly and there's no let-off to prevent overdrawing.
Should I measure draw length to calculate arrow length?
Yes. The most accurate method is to measure your draw length first, then add 1-2 inches for safety clearance. Draw length is measured from the nock point to the throat of the grip (pivot point) plus 1.75 inches to account for the distance to the back of the bow. Use our draw length calculator for precise measurements.
What's the minimum arrow length for safety?
At absolute minimum, arrows must extend at least 1 inch past your arrow rest at full draw. However, 1.5-2 inches is much safer and recommended by all archery organizations. For beginners and traditional archers, 2+ inches is best.
Do I need longer arrows for hunting?
Yes, add 0.5-1 inch extra if you hunt with fixed-blade broadheads. Broadheads are wider than field points and need extra clearance past your rest, cables, and riser. This prevents the broadhead from striking anything during release, which could cause dangerous arrow deflection.
Can arrow length affect accuracy?
Not significantly within the safe range. Arrows that are 1-2 inches longer than minimum won't hurt your accuracy. The minor weight increase is negligible. However, arrows that are too SHORT will definitely hurt accuracy (and safety) by striking the bow or rest during release.