So you bought (or are about to buy) your first sewing pattern. Exciting! But then you flip it over and the back of the envelope is covered in numbers, tables, and terms like "with nap" and "45\" or 60\" fabric." It looks intimidating, but it's actually a logical system once you know how to read it. This guide walks you through every step from opening the pattern to walking out of the fabric store with everything you need.
1. Reading the Pattern Envelope: Where to Find What You Need
The back of a pattern envelope has four key sections:
- Line drawings and views — Letters (A, B, C, D) label each design variation. View A might be a sleeveless dress, view B with sleeves and a collar. Pick your view first because everything else depends on it.
- Size chart — Pattern sizes are not ready-to-wear sizes. A pattern size 14 is not the same as a store size 14. Always go by your body measurements, specifically bust/chest, waist, and hip.
- Fabric yardage table — This is the big grid. It lists how much fabric you need by size, view, and fabric width (usually 45" and 60" columns).
- Notions list — Thread, zippers, buttons, elastic, interfacing — everything besides the main fabric.
2. Understanding the Size Chart vs. Ready-to-Wear Sizes
Don't panic if your pattern size is larger than your store size. Pattern sizing is standardized differently — a modern size 8 might be a pattern size 12 or 14. Big 4 pattern companies (Simplicity, McCall's, Butterick, Vogue) use a sizing system that hasn't changed much since the 1960s.
Measure yourself wearing the undergarments you'll wear with the finished garment. For dresses, you need bust, waist, and hip. If your measurements span multiple sizes, buy the size that matches your largest measurement — it's easier to take fabric in than add it where there is none. Many patterns now include finished garment measurements on the tissue paper itself, which is even more useful than the envelope chart.
3. Calculating Fabric From the Pattern: Four Steps
Here's the mechanical process. Don't skip any step.
- Find your size in the leftmost column of the yardage table.
- Find your view (A, B, C, etc.) across the top of the table.
- Find the fabric width column — usually 45" and 60". If your fabric is 54" wide, use the 45" column to be safe (you can squeeze more out of 54" but the table doesn't list it).
- Read the yardage — this is the amount for the main fabric. If the pattern calls for lining, contrast fabric, or interfacing, those will be listed separately.
If you're working with a pattern that doesn't have a yardage chart — like a self-drafted design or a PDF pattern — use our Fabric Yardage Calculator to work out yardage from your cut pieces yourself.
4. The Notions Shopping List: What the Pattern Doesn't Include in Yardage
The envelope lists notions, but it rarely tells you how much they cost or what's optional. Here's the real shopping list:
- Thread — One spool of all-purpose polyester thread matches most projects. Buy thread that matches your fabric, not the pattern illustration. Hold the spool against the fabric — if it disappears, it's the right color.
- Zippers — The pattern specifies length and type (invisible, regular, separating). Don't substitute lengths — a 7" zipper is not the same as a 9" one for a skirt side seam.
- Buttons — Count how many the pattern calls for, then buy one extra. You will lose one eventually.
- Interfacing — The pattern may call for fusible or sew-in. If you're unsure, fusible is easier for beginners. Yardage for interfacing is usually listed separately from main fabric.
- Elastic — Specified by width (e.g., 3/4" elastic for a waistband). Buy the exact width listed.
5. Pre-Wash and Shrinkage: The Buffer Most Beginners Forget
Natural fibers shrink. Cotton shrinks 3-5%, linen up to 7%, rayon sometimes 10% or more. The pattern assumes you pre-washed, but the fabric on the bolt hasn't been washed. Buy 10% extra yardage for cotton and linen, and up to 15% for rayon, to account for shrinkage. Pre-wash your fabric the same way you'll wash the finished garment — if you're going to machine-wash a cotton dress, machine-wash the fabric before cutting.
After pre-washing, press the fabric flat with an iron. You want to measure and cut on smooth, un-creased fabric — wrinkled fabric leads to inaccurate cuts.
6. Building a Complete Shopping List With Budget
Before you walk into the fabric store, write down:
| Item | Quantity | Estimated Cost |
|---|---|---|
| Main fabric | Pattern yardage + 10% shrinkage | Check price per yard on bolt |
| Lining fabric (if needed) | Pattern yardage | Usually $3–8/yd |
| Interfacing | Pattern yardage | $2–5/yd |
| Thread | 1 spool | $2–5 |
| Zipper | 1 per pattern | $2–6 |
| Buttons | Pattern count + 1 extra | $0.50–3 each |
| Pattern cost | 1 | $3–20 |
The total for a beginner dress project typically lands between $25 and $60 if you use quilting cotton, or $40 to $100 with linen. Our Fabric Cost Calculator helps you plug in your yardage and price per yard to get the exact fabric line item before you even leave the house. Take the full list with you — it's your project's best insurance against a second trip to the store.