预裁布料计算器 ✂️
计算预切布料的码数等价值。快速了解你的拼布项目需要多少果冻卷、魅力包或层蛋糕。
How to Use the Precut Calculator
Select your precut type and enter how many bundles or pieces you have. The calculator shows total piece count, total fabric area, and the approximate equivalent in regular yardage.
Equivalent yardage = total area ÷ (42" × 36"). This helps when substituting precuts for regular yardage in patterns. Remember that precut edges include seam allowances, so the usable finished area per piece is smaller.
Precuts are ideal for scrappy quilts, but check your pattern's requirements carefully. A pattern calling for 1/4 yard cuts per fabric needs 18" × 21" pieces — fat quarters work perfectly; jelly roll strips would need to be pieced.
常见问题
一卷果冻卷有多少布料？
果冻卷包含40条2.5"×42"的布条，总面积约4,200平方英寸，相当于约2.8码42"宽布料。
一床拼布被需要多少个魅力包？
魅力包含42片5英寸正方形。用图案所需的5"方块数除以42即可。例如腿盖拼布需要120个方块，则需3个魅力包（3×42=126，略有富余）。
胖四分之一与普通四分之一码有什么区别？
普通四分之一码 = 9"×44"。胖四分之一 = 18"×21"。面积相同，但胖四分之一的形状更便于剪裁方形和矩形。