Fabric Calculator
Stop guessing at the fabric store. Enter your project dimensions, seam allowances, and bolt width to find out exactly how much fabric to buy. The calculator also handles pattern repeats so you do not waste material matching prints.
How the calculation works:
- Cut size = finished size + seam allowance on each side
- Pieces per row = how many cuts fit across the bolt width
- Rows needed = total pieces divided by pieces per row (rounded up)
- Total length = rows x cut length (adjusted for pattern repeat)
Common bolt widths:
- 36" -- vintage and specialty fabrics
- 45" -- quilting cotton, most craft fabrics
- 54" -- home decor and upholstery fabrics
- 60" -- knits, apparel fabrics, fleece
- 108" -- quilt backing and wide sheeting
Tips for buying fabric:
- Always buy 10-15% extra for mistakes and shrinkage
- Pre-wash fabric before cutting if it might shrink
- Pattern repeats can add significant yardage, especially for large motifs
- Save your selvage edges to check dye lots later