01
Formula
Widths = ceiling of (finished width × fullness ÷ fabric width).
Yards = widths × (finished length + allowance) ÷ 36. Pattern repeat is not added unless you include it in the allowance or the length.
Apply for financingFabric calculator
Fabric calculator for yardage and curtains
This fabric yardage calculator counts how many widths of cloth cover a finished width at the fullness you set, then converts the cut length to yards. Use it as a curtain fabric calculator. A quilt calculator backing is the same rectangle with fullness set to 1.
Fabric
5.11yd
Widths2
Inches of length184
Planning estimate from the numbers you enter. Coverage, density, waste and price are assumptions, not a supplier quote or an engineering specification.
How it works
Yards are cut inches divided by 36.
Widths needed are the finished width times fullness, divided by the fabric width, rounded up. You cannot buy a partial width of the bolt and still have a continuous drop. Each width is the finished length plus hems and headers. Total inches divided by 36 are yards. Fullness of 2 means the flat cloth is twice the finished width, which is a common curtain gathering. Set fullness to 1 for a flat panel, a quilt backing, or an upholstery piece you have already measured as the cut size. An upholstery fabric calculator still has to add the rails, the boxing, and the pattern repeat. This page adds only the allowance you type.
02
Example
84 inch curtains, 8 inches of hem, 48 inch width, fullness 2, 54 inch fabric.
The gathered width is 96 inches. That takes 2 widths of 54 inch cloth. Each width is cut 92 inches. The order is 5.11 yards. A quilt calculator backing of the same rectangle with fullness 1 would use fewer widths. Set fullness to 1 and re-read the yards.
03
Tips
Measure the cut, then let the form do the bolt math.
Upholstery panels that are already the cut size should use fullness 1 and an allowance of 0 if you included the hem in the length. Curtains usually want both the hem allowance and the fullness. Railroaded fabric, run sideways, is a different width. Swap length and width only if that is really how you will cut.
04
Equipment
A sewing business's machines are the equipment.
If you are financing shop equipment from $15,000 to $2 million, Dengaro can take the application. Yardage is not the machine price.
Important questions
Know what to expect.
How do I use this as a curtain fabric calculator?+
Enter the finished drop, the hem and header allowance, the finished width of the treatment, the fullness, and the fabric width on the bolt. The yards are the cut length of the widths you need.
What fullness should a quilt calculator use?+
Use 1 if the length and width are already the backing size, including any overhang. Add overhang to the length and width before you calculate. This page does not lay out blocks or sashing.
Can an upholstery fabric calculator include pattern repeat?+
Only if you add the repeat into the allowance or the finished length. The form will not guess a repeat. Rails and boxing need to be inside the dimensions you type.
Why round the widths up before converting to yards?+
Each width is a continuous strip from the bolt. Needing 1.2 widths means buying 2. The yards use that whole second width.
Financing built into the sale