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Convert project area to square inches, divide by fabric width for length in inches, then divide by 36 for yards. A 20 square foot project on 54 inch fabric needs about 1.48 yards, or 1.63 yards with a 10 percent cutting waste allowance. Always round up and allow for shrinkage, seams, and pattern matching.
Yards equal project area in square feet multiplied by 144, divided by fabric width in inches, divided by 36. In plain terms, one yard is 36 inches long by the full fabric width, so wider fabric covers more area per yard. The waste result adds 10 percent for cutting, seams, and small mistakes, which is the cheapest insurance against running short mid project.
This chart gives typical yardage ranges for sewing projects, and helps you sanity check the result. Shirts and blouses need about 2 to 2.5 yards, dresses about 2.5 to 4 yards depending on length and sleeves, pants and skirts about 2 to 3 yards, and jackets about 3 to 5 yards. A crib quilt needs about 2 to 3 yards, a twin quilt about 4 to 6 yards, a queen quilt about 8 to 10 yards, and a king quilt about 10 to 12 yards. A standard window curtain needs about 4 to 6 yards, and a three seat sofa needs about 12 to 15 yards for upholstery.
Enter your project area in square feet and your fabric width in inches, then read yards needed and yards with waste. Measure the finished pieces, add seam allowances, and convert to area before entering the number. If you are working from a pattern, use the pattern envelope yardage as a cross check, since pattern brands size their charts differently.
Fabric width changes everything. Quilting cotton is usually 44 to 45 inches wide, apparel and home decor fabric is often 54 to 60 inches wide, and quilt backing can reach 108 inches wide. A 45 vs 60 inch comparison shows the wider fabric needs fewer yards for the same area, because each yard covers more width. Always check the bolt label, since the same fabric line can be sold in different widths.
Quilt yardage depends on block size, strip width, and usable width after trimming selvedges. A common usable width is 40 inches after the selvedge is removed, so a 2.5 inch strip yields fewer patches per strip than the full bolt width suggests. Count patches per strip, round strips up, and add insurance for prewash shrinkage, squaring up, and miscuts. That insurance is why experienced quilters buy a little extra for the fabric they love most.
Dress fabric yardage grows with length, sleeve style, and fullness. A simple dress at 44 inch width needs about 3.5 yards, a shirt about 2 yards, and a skirt about 1.75 yards in the worked examples competitors publish. Curtain fabric yardage grows with fullness ratio: a 60 inch wide window at 80 inches tall with a fullness ratio of 2 needs about 6.67 yards on 45 inch fabric, because you need 3 fabric widths times the height, divided by 36.
Prewash fabric before cutting when the finished item will be washed, because cotton can shrink noticeably and shrinkage falls mainly on the crosswise grain. Add 10 percent as a baseline, more for loosely woven fabric or fabric you plan to prewash. Pattern repeat fabric yardage needs extra too: directional prints, one way nap, and large repeats force pieces to be cut in one direction, so buy an extra repeat length for matching across seams.
Competitor calculators ask for garment details but hide the maths, while guides give charts with no calculator at all. Our page does both on one mobile first screen: the formula is shown, the width effect is explained, and the waste allowance is a separate result you can compare. No ads, no sign up, and no upsells stand between you and the number you need at the cutting table.
Most dresses need 2.5 to 4 yards depending on length, sleeves, and fabric width. A simple dress on 44 inch fabric needs about 3.5 yards, while wider 60 inch fabric can reduce that number.
Convert your project area to square inches, divide by fabric width in inches for length, then divide by 36 for yards. Add 10 percent for cutting waste, shrinkage, and pattern matching.
A crib quilt needs about 2 to 3 yards, a twin quilt about 4 to 6 yards, a queen quilt about 8 to 10 yards, and a king quilt about 10 to 12 yards, plus extra for backing and binding.
Quilting cotton is usually 44 to 45 inches wide, apparel and home decor fabric is often 54 to 60 inches wide, and quilt backing can reach 108 inches wide. Always check the bolt, since widths vary by line.
Yes, if the finished item will be washed. Prewashing removes shrinkage before cutting, so the finished size stays true. Wash and dry the fabric the same way you will wash the finished item.
Buy at least 10 percent extra, or half a yard extra on a small project, for shrinkage, cutting errors, and pattern adjustments. For directional prints or large pattern repeats, add one full repeat length.
Yes, a lot. Wider fabric covers more area per yard, so a project that needs 2 yards on 45 inch fabric may need noticeably less on 60 inch fabric. That is why width is a required input here, not an afterthought.
A standard window curtain needs about 2 to 5 yards depending on window size and fullness. A full gathered look at a fullness ratio of 2 roughly doubles the flat window width before you divide by fabric width.
A chair cushion needs about 1 to 2 yards, a chair about 3 to 7 yards, and a three seat sofa about 12 to 15 yards, depending on pattern repeat and cushion style. Measure each panel and add them up for an accurate total.
A yard of fabric is 36 inches long by the full width of the bolt. Buying 2 yards of 45 inch fabric gives you a piece 72 inches long and 45 inches wide, not 2 square yards of material.