Arrow Cut Length Calculator
An arrow that is too short can pull a broadhead back onto the rest or your hand. An arrow that is too long adds weight and weakens dynamic spine. Find a safe, practical cut length for your bow before you cut a dozen shafts.
🎯 Arrow Cut Length Calculator
Enter your values below. Results update as you type.
Nock throat to grip pivot = Draw length − 1.75 in
Cut length = (Draw length − 1.75) + Rest position + Clearance + Extra
Length is measured from the nock throat (where the string sits) to the end of the carbon, not including the point or insert lip.
📏 The Most Accurate Method: Measure at Full Draw
- Take an uncut arrow or a long test shaft and mark it with a fine pen.
- Have a helper watch while you come to full draw with the uncut arrow on the rest. Never dry-fire.
- The helper marks the shaft where it crosses the front of the rest launcher.
- Add your clearance: about 1/2 in for field points, 3/4 in for mechanicals, and at least 1 in for fixed blades.
- Measure from the nock throat to the new mark. That is your cut length.
Use the calculator above to sanity-check the measurement. If the two disagree by more than half an inch, measure again.
📊 Typical Cut Lengths by Draw Length
Compound bows with the rest launcher about 3/4 in in front of the pivot.
| Draw Length | Field Points | Mechanical Heads | Fixed Blades |
|---|---|---|---|
| 26 in | 25.50 in | 25.75 in | 26.00 in |
| 27 in | 26.50 in | 26.75 in | 27.00 in |
| 28 in | 27.50 in | 27.75 in | 28.00 in |
| 29 in | 28.50 in | 28.75 in | 29.00 in |
| 30 in | 29.50 in | 29.75 in | 30.00 in |
How length affects spine and FOC
Every extra inch of shaft makes an arrow act weaker in spine and moves the balance point back, lowering FOC. After choosing a length, confirm spine with the arrow spine calculator and balance with the FOC calculator.
❓ Frequently Asked Questions
How long should my arrows be for a 29-inch draw?
With a typical compound rest, about 28.5 in for field points and around 29 in for fixed-blade broadheads, measured nock throat to end of carbon.
Is it safe to shoot arrows shorter than my draw length?
Only if the point stays clearly in front of the rest at full draw. A broadhead that comes back onto the rest can cut you or knock the arrow off the rest.
Should arrow length match draw length exactly?
Not necessarily. Draw length is measured to the grip pivot plus 1.75 in. Where your rest sits and the point you shoot both change the right length.
Does cutting arrows shorter make them stiffer?
Yes. A shorter shaft behaves stiffer in dynamic spine. Cutting about 1 in shorter acts roughly like going one spine group stiffer.
🧮 Related Calculators
Calculator results are planning estimates. Always confirm your setup with chronograph readings and real shooting.