Calculator
Needlepoint pillow size calculator
Create a dimension worksheet for a knife-edge pillow with an optional fabric inset.
Use 0 for exact size; 1–2 inches is a selectable planning choice, not a universal rule.
Finished pillow face12 × 12 in
Backing cut size13 × 13 inincludes selected seam allowance
Insert starting size13 × 13 in48 in edge perimeter
Block and remeasure first. Boxed pillows, gussets, zippers and professional finishing methods need a custom workroom specification.
How this calculation works
The finished face adds the selected fabric inset to all four sides of the blocked needlepoint. The backing cut then adds the chosen seam allowance. Insert fullness is an adjustable preference rather than a hidden rule.
What to verify before buying or cutting
Block and remeasure the needlepoint before planning. Professional finishers may use different seam, welt, gusset, zipper, insert, or boxing specifications, which override this worksheet.