Muttley Crew longbow arrow spine calculator - cross-reference below is from various other charts and models.

Your Details

Draw Length (inches):

Longbow Information

Bow Draw Weight @ Rated Length (lbs): Bow Rated Draw Length (Usually 28"): Bow Length (AMO):

Limb Profile: Shelf Style:

Arrow Components

Wood Type: Fletchings: Pile Weight (grains):

Enter your arrow specifications to find suitable bows

Woods Checker

Static Spine (lb): Wood Type: Fletchings: Pile Weight (grains): Shaft Diameter: Length (throat → pile, inches): Your Draw Length (inches):

Stu Miller 3.0

Muttley Crew Archers revision of Stu Miller's calculator

Arrow Shaft Size BOP Length (inches) Point Weight (grains) Insert Weight Footing (Y/N) Nock End Weight (grains) Fletching Type or Weight (grains)

Bow Model Bow Type Rated Weight (pounds) Rated Draw (inches) Your Draw (inches) Center Cut Strike (inches) String Material Type Personal Form Factor

Credits
Original Spreadsheet: Stu Miller :: Download The Javascript

Arrow Spine Converter

Pounds (ATA/AMO/GNAS) ASTM Values (Rounded)

Easton Aluminium Tubes Common ASTM Spine Options

Deflections:
ATA/AMO/GNAS 2.0 lb @ 26″ : — in
ASTM 1.94 lb @ 28″ : — in (—)
Next Easton Tube: — lb
ATA/AMO/GNAS Pounds: — lb

Will try to choose the nearest stiffer Easton/Common Spine match.

Archery Toolbox

Recurve/Compound Shafts