Find your Easton arrow spine from draw weight and cut arrow length, with the 2026 chart’s adjustments for bow speed, release type and point weight.
Easton 2026 Hunting Arrow Spine Lookup
Static spine is a shaft deflection rating: a lower number is stiffer. This calculator implements one named manufacturer's current compound-hunting chart, not a universal dynamic-spine equation.
How the Calculation Works
The calculator applies the displayed formula or named lookup to the visible required inputs and reports one defined result.
How to Use This Calculator
- Enter your bow's actual peak draw weight and cut arrow length.
- Choose the bow's speed rating, release type and point weight, or keep the defaults.
- Select Calculate and review the result, supporting values, warning, and steps.
- Use Reset before starting a different bow, arrow, or round.
Worked Example
A 60 lbf bow, 28-inch cut shaft, 301-340 fps ATA band, mechanical release, and 100-grain point stays at 60 chart pounds and returns the published 400-350 range.
Input and Result Guide
| Item | How to use it |
|---|---|
| Cut shaft length | Measure from the nock throat to the shaft end, excluding the point and insert. |
| Speed band | Choose the bow's advertised ATA-rating band used by the Easton adjustment. |
| Point weight | This scoped tool accepts 25-grain steps and assumes insert/outsert weight below 25 grains. |
| Spine range | The larger number is weaker and the smaller number is stiffer. |
| Final selection | Confirm the exact shaft model, available sizes, safety limits, and tune. |
Interpreting the Result
The returned band is a chart starting range. Model availability and tuning determine the final shaft, and a value at a boundary should be checked carefully with the current guide or a qualified shop.
Assumptions and Limitations
This implementation is only for the Easton 2026 compound-hunting table with the stated component scope. It does not size target, traditional, aluminum, crossbow, or other-brand shafts and does not replace bareshaft or broadhead tuning.
Common Questions
Can I see the whole chart row?
Yes. After you calculate, Calculation details lists Easton's spine range for every cut length from 23 to 34 inches at your adjusted chart weight.
Will my last successful calculation be restored?
Yes. The calculator saves your inputs in this browser and recalculates the result when you return. Reset clears that saved state.
Sources
Easton Archery, 2026 Product Guide, Hunting Arrow Size Selection chart.
