Woven Fabrics — The Workhorses of Sewing
Woven fabrics are made by interlacing two sets of threads at right angles — warp threads run lengthwise (parallel to the selvage) and weft threads run crosswise. They have limited stretch (unless blended with spandex) and are the most common choice for structured garments and home decor.
| Fabric | Typical Width | Best For | Yardage Note |
|---|---|---|---|
| Cotton broadcloth | 44" – 45" | Shirts, dresses, quilting | Reliable width; most patterns default to this |
| Cotton poplin | 44" – 45" | Crisp shirts, skirts | Slightly lighter than broadcloth, same layout |
| Linen | 52" – 54" | Summer dresses, pants, home decor | Wider than cotton — often saves 1/4 to 1/2 yd per project |
| Denim | 45" – 60" | Jeans, jackets, tote bags | Heavy; check width — 60" denim can halve yardage vs 45" |
| Silk charmeuse | 44" – 45" | Blouses, bias-cut dresses, lingerie | Slippery — buy 1/2 yd extra. Cutting errors are expensive |
| Cotton canvas / duck | 45" – 60" | Tote bags, aprons, outdoor cushions | Heavyweight; wider widths common |
The key yardage insight with wovens: the width IS the width. You cannot stretch woven fabric wider to fit a pattern piece. If a piece needs 22" across and your fabric is 44" wide minus selvages, you get two pieces side by side — exactly two, with no wiggle room.
Knit Fabrics — Stretch Changes the Rules
Knit fabrics are made from interlocking loops of yarn, giving them natural stretch. This changes yardage calculations in two ways: knits are typically wider than wovens (58-60" is standard), and the stretch means you can sometimes use negative ease and cut fewer pieces.
| Knit Type | Typical Width | Stretch | Yardage Note |
|---|---|---|---|
| Cotton jersey | 58" – 60" | 2-way, ~25% | Most common knit; tubular construction available |
| French terry | 58" – 60" | 2-way, ~20% | Sweatshirt fabric; bulky — thicker, more yardage for the same garment |
| Rib knit | varies (30" – 60") | 2-way, 50-75% | Tubular rib is often narrower; measure before buying |
| Ponte / double knit | 58" – 60" | 2-way, ~15% | Stable knit — behaves almost like a woven for yardage |
| Sweater knit | 54" – 60" | varies | Open structure — requires stay-stitching; buy 1/4 yd extra |
Non-Woven Fabrics and Interfacings
Non-wovens are made by bonding fibers together with heat, chemicals, or mechanical pressure — no weaving or knitting involved. They are mostly used for interfacings, stabilizers, and craft projects, but a few (like felt) stand alone.
- Felt (wool or acrylic) — Typically 72" wide. Sold by the yard or in pre-cut sheets. No fraying, so seam allowance can be reduced to 1/4", which saves fabric on small projects.
- Fusible interfacing — Usually 20" to 22" wide on the bolt. Narrower than fashion fabric, so you often need the same yardage of interfacing as the garment piece it backs.
- Non-woven stabilizer — Widths vary from 12" to 60". For embroidery backing, buy enough to hoop plus 1-2" of margin all around.
Interfacing is the one non-woven most sewers forget to calculate. If a pattern calls for 1.5 yards of fashion fabric and you need fusible interfacing for the collar, cuffs, and button placket, check the interfacing width — at 20", you may need almost as much interfacing as fashion fabric.
Shrinkage by Fiber — Always Pre-Wash
Shrinkage is the silent yardage killer. If you cut before washing, your finished dress comes out of the first laundry cycle two inches shorter. Pre-washing is non-negotiable for natural fibers. Here is what to expect:
| Fiber | Typical Shrinkage | What to Do |
|---|---|---|
| Cotton | 3% – 5% | Wash and dry on hot once before cutting. A 3-yard cut shrinks about 3-5 inches in length. |
| Linen | 4% – 6% | Wash warm, tumble dry. Linen keeps shrinking slightly over the first few washes. |
| Rayon / Viscose | 5% – 8% | The worst shrinker. Wash cold, hang dry. Even then, buy 10% extra yardage. |
| Wool | varies wildly | Dry clean or hand wash cold. Felting shrinkage is permanent — do not machine wash wool unless labeled superwash. |
| Polyester / Nylon | 0% – 1% | Essentially no shrinkage. Still pre-wash to remove factory sizing. |
| Silk | 2% – 4% | Dry clean recommended. If hand washing, expect some shrinkage and a change in hand-feel. |
The practical takeaway: if a cotton dress calls for 2.5 yards, buy 2.75. If a rayon dress calls for 3 yards, buy 3.5. That extra quarter-yard is insurance against a too-short hem.
Nap, One-Way Designs, and Stretch Direction
Three fabric characteristics change how you lay out pattern pieces — and therefore how much yardage you need.
- Nap: Fabrics like velvet, corduroy, faux fur, and velour have a pile that catches light differently depending on direction. All pieces must face the same way, which prevents the space-saving trick of rotating pieces 180 degrees. Add 15-20% yardage.
- One-way prints: Stripes, plaids, and prints with a clear "up" direction (floral stems, animal faces, text) cannot be flipped. Same layout restriction as nap — same 15-20% penalty.
- Stretch direction: For knits, the greatest stretch is usually crosswise (from selvage to selvage). Your pattern pieces must be oriented so the stretch wraps around the body, not up and down. This matters less for yardage but is critical for fit — get it wrong and the garment bags at the knees and elbows.
Forgiving Fabrics vs Expensive Mistakes
Not all fabrics are equally beginner-friendly. Some hide mistakes; others magnify every wobble:
- Forgiving: Cotton broadcloth, flannel, denim, linen blends, cotton jersey. These hold their shape, press flat, and do not slip under the machine foot. Seams stay where you put them.
- Expensive mistakes: Silk charmeuse (slips constantly), chiffon (impossible to pin), sequined fabric (breaks needles), velvet (crush marks are permanent), and any fabric over $30/yard. Save these for after you have a few projects under your belt.
- Middle ground: Rayon challis, polyester crepe, lightweight chambray. Manageable with patience and plenty of pins.
Before committing to an expensive fabric, check the fabric weight guide to understand how weight and drape affect the final garment. A heavy linen behaves completely differently from a lightweight one, even though the fiber is the same.