UV SPINE CALCULATOR

Spine Chart Calculator

UV 1K Arrows

Spine Calculator

Please enter the required information below to find the perfect arrow for your setup.

lbs
in

SPINE CHART

Shaft Length (in)

To determine your shaft length subtract 1in from your draw length. (Shaft Length = Draw Length - 1in)


IBO Speed (fps) Adjustments

DO NOT include weight adjustments to the Spine Calculator input labeled "Draw Weight". Only use these adjustments when referencing this chart.

Less than 300fps :
Subtract 5lbs from your draw weight

300-330fps :
No adjustments needed

331-351fps :
Add 5lbs to your draw weight

More than 351fps :
Add 10lbs to your draw weight

*Shaft lengths outlined with purple boxes are available to purchase as pre-cut arrows.

UV 1K Spine Chart

DIAGRAM

UV 1K Arrow Diagram