Cushion Fabric Calculator
Estimate fabric for a simple two-face cushion or a simple box cushion with one boxing strip.
Calculator
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Result
- Purchase
- 5/8 yd (0.625 yd). Exact length 0.5278 yd, rounded up to the next 0.125 yd.
No zipper plaque, piping, welt, foam compression, T-cushion, or rounded-corner construction is added.
A simple cover is two rectangular faces per cushion. Seam allowance is added to every edge.
Piece groups are planned separately and their fabric lengths are added. Mixed nesting of faces and boxing strips is not optimized.
Vertical repeat is a simple repeat along the fabric length. Rotation is used only when rotation allowed is on.
Cut / purchase plan
GroupCover faces
Count2
Cut width19 in (48.26 cm)
Cut length19 in (48.26 cm)
Fabric length19 in (48.26 cm)
| Group | Count | Cut width | Cut length | Fabric length |
|---|---|---|---|---|
| Cover faces | 2 | 19 in (48.26 cm) | 19 in (48.26 cm) | 19 in (48.26 cm) |
How this calculation works
A two-face cover uses two rectangles per cushion. Each edge gains the seam allowance you enter.
A box cushion uses a top, a bottom, and one boxing strip. The strip’s finished length is twice the width plus depth. Its cut length adds the join allowance you enter.
Faces and boxing strips are planned as separate groups. Their lengths are added, then the total is rounded up for purchase.
Worked example
One 18 in square cover, 1/2 in seam allowance, 54 in fabric
Each face cuts at 19 by 19 in. Two faces are required.
Both fit in one row on 54 in fabric, so the layout length is 19 in.
The purchase quantity rounds up from 19 ÷ 36 yards. No zipper plaque or piping is included.
Assumptions and limitations
- Seam allowance is the same on every edge.
- The boxing join allowance is explicit. It is not a hidden zipper-panel allowance.
- Vertical repeat and rotation follow the same rules as the rectangular yardage calculator.
- Zipper plaques, piping, welt, foam compression, T-cushions, and rounded corners are not added.
- The two piece groups are not nested into a single tighter layout.
Common questions
Does the box cushion include a zipper?
No. Add any zipper panel yourself, or increase the join allowance only if that number truly represents the extra cloth you will cut.
Which fabric widths are suggested?
46, 54, and 60 in are quick choices. The field accepts any usable width greater than zero.