Calculator
Arrow Length Calculator
Use this arrow length calculator to estimate a safe starting arrow length from draw length, then learn how to confirm fit before cutting arrows.
Estimate a safe starting arrow length
Formula: draw length + allowance = estimated arrow length.
Enter your draw length in inches, choose a safety and tuning allowance, then review the result before cutting shafts.
- Many archers start with arrows about 1–2 inches longer than draw length.
- Final length depends on bow type, arrow rest, broadhead or field-point clearance, clicker use, and tune.
- Never cut arrows so short that the point can pull behind the rest or shelf at full draw.
- A bow shop or qualified coach can confirm safe fit before cutting.
What the calculator is doing
Confirm the fit before cutting shafts.
Example estimates
These examples use a +1.5 inch allowance, which is a common starting point.
| Draw length | Allowance | Estimated arrow length |
|---|---|---|
| 26 in | +1.5 in | 27.5 in |
| 27 in | +1.5 in | 28.5 in |
| 28 in | +1.5 in | 29.5 in |
| 29 in | +1.5 in | 30.5 in |
| 30 in | +1.5 in | 31.5 in |
How to confirm the fit
Use the guides below before you cut shafts.
Frequently asked questions
Short answers for the most common arrow-length questions.
How much extra length should I start with?
Many archers start with arrows about 1–2 inches longer than draw length. The right allowance depends on the bow, the rest, and how you shoot.
Can I cut arrows to my exact draw length?
Usually no. A little extra length gives you a safer starting point and makes tuning easier before the final cut.
Does the allowance change for compound and recurve bows?
Yes, it can. Bow type, rest style, and whether you use a clicker or broadheads can all change the right starting allowance.
What if the result feels too short?
Stop and recheck the measurement. If the point can pull behind the rest or shelf at full draw, the arrow is too short for a safe cut.
Before you cut
Use the arrow length calculator as a starting estimate, then compare it with the main arrow and draw-length guides. For a deeper explanation of measuring and confirming arrow length before cutting shafts, read the arrow length guide.
Check spine after length
Once you have a safe starting length, confirm the shaft maker’s spine chart before cutting. Length and spine should be checked together. After that, compare the finished arrow mass with the Arrow Weight Calculator and check balance with the Arrow FOC Calculator before you buy or cut a full batch.