How to Choose Quilt Backing Fabric: Yardage, Width, and Design Tips

You've chosen your fabrics, pieced your quilt top, and watched your design come together one block at a time. Now it's time to choose the fabric that will bring everything together on the back.

Quilt backing might not get as much attention as the quilt top, but it's an important part of the finished project. The right backing can complement your colors, add another layer of personality, and make the quilting process easier. And with a little planning, you can avoid one of the most frustrating quilting surprises: discovering you don't have quite enough fabric.

Whether you're making your first quilt or your latest in a long line of projects, here's how to choose a backing fabric, estimate your yardage, and prepare it for quilting.

1. Choose a Backing That Works With Your Quilt Top

Your backing doesn't have to match your quilt top perfectly. In fact, it doesn't have to match at all! Think of it as another opportunity to make the quilt feel intentional.

Here are a few approaches to try.

Choose a coordinating print

A print that picks up one or two colors from your quilt top can make the whole project feel connected. You might choose a floral that echoes a small print on the front, a geometric that complements the piecing, or a larger-scale print that gives the back its own personality. For help with mixing print scales read our How to Mix Fabric Scales article.

You don't need to find an exact match. Look for colors and visual qualities that work well together.

Keep things simple with a blender or solid

If your quilt top already has lots of color and pattern, a quieter backing can be a lovely balance. A solid or subtle blender lets the quilt top take center stage while still giving the finished quilt a polished look.

This can also be a good choice when you want the quilting stitches to stand out without competing with a busy backing print.

Make the back part of the design

Who says the back has to be one fabric?

A pieced backing can incorporate leftover fabrics from the quilt top, favorite prints, or larger scraps that are too good to put away. You could create simple stripes, join a few coordinated fabrics, or arrange larger pieces into a second design.

A pieced back takes a little extra planning, but it can make the quilt feel even more personal.

2. Decide Between Regular Quilting Cotton and Wide Backing

Once you've settled on a look, consider the width of the fabric. This affects how many pieces you'll need to join and how much yardage to purchase.

Regular-width quilting cotton

Most standard quilting cotton is approximately 42 to 44 inches wide before accounting for the selvages. For anything wider than the usable fabric width, you'll need to join multiple panels to create a backing large enough for your quilt.

Regular-width fabric gives you plenty of choices. You can use a print from the collection featured on the front, select a favorite blender, or create a pieced backing from fabrics you already own.

The trade-off is that you'll need to calculate the panel layout, sew the seams, and press them before quilting.

Wide-back fabric

Wide-back fabric is made specifically for projects that need more coverage. Many wide-back quilting fabrics are approximately 108 inches wide, although you should always check the width listed for the particular fabric you're considering.

For many quilts, wide backing can cover the entire back in one piece, eliminating long seams. This can save preparation time and make it easier to use a large-scale print without interrupting the design.

Wide backing generally costs more per yard than regular quilting cotton, but you need fewer yards. Compare the total cost of the fabric needed for each option rather than comparing the price per yard alone.

Which should you choose? If you've fallen in love with a particular regular-width print, piecing the backing may be worth the extra work. If you prefer fewer seams and find a wide-back fabric you love, wide backing can be a convenient alternative.

3. How Much Backing Fabric Do You Need?

This is the part worth double-checking before you head to the cutting table.

The amount of backing fabric you need depends on your quilt's dimensions, the width of the fabric, how you plan to piece it, and how much extra fabric your quilting method requires. If you're looking for help with fabric calculations read our How Much Fabric Do I Need to Make a Quilt? article

Start with the size of your quilt top

Measure the quilt top after piecing it, rather than relying only on the dimensions listed in your pattern. Small differences can add up, and the actual measurements will give you a more reliable starting point.

Next, determine how much extra backing you need around all four sides.

A common starting point is 4 inches of extra backing on every side, which adds 8 inches to both the width and length. For example, if your quilt top measures 60 × 80 inches, you'd plan for a backing measuring at least 68 × 88 inches.

Your longarm quilter may require more. Always check their backing specifications before cutting or purchasing fabric. If you're quilting the project yourself, follow the requirements for your machine and quilting setup.

Calculate the yardage for regular-width fabric

With regular-width fabric, you need enough panels to cover the required backing width after accounting for the seams and the selvages you'll remove.

Let's use our 60 × 80-inch quilt as an example. With 4 inches of extra fabric on each side, the backing needs to measure at least 68 × 88 inches.

If your regular-width fabric has enough usable width to join two 88-inch-long panels and cover the required 68-inch width, you can use two panels. That means cutting two lengths of approximately 88 inches each, plus a little extra for squaring and trimming.

Since 88 inches is 2⅔ yards, two panels require about 5⅓ yards before accounting for cutting allowances. You would need to round up to an amount that gives you enough fabric, based on the actual usable width and layout. In this example, 5¾ yards would be a safer starting estimate than purchasing exactly 5 yards.

This is an illustration, not a universal yardage chart. Depending on the fabric's usable width, seam allowances, and your chosen panel layout, the amount can change. For larger quilts, compare both horizontal and vertical panel layouts before deciding how much to buy.

Calculate the yardage for wide backing

Wide backing can simplify the calculation because you may be able to cover the backing in a single piece.

For the same 60 × 80-inch quilt, our minimum backing size is 68 × 88 inches. If the wide-back fabric's usable width comfortably covers the 68-inch dimension, you need a length of at least 88 inches, plus any additional allowance required for squaring and quilting.

Eighty-eight inches is about 2½ yards when rounded up to a practical purchase amount.

Before buying, confirm the fabric's actual usable width and check whether the quilt's dimensions, print direction, and quilting requirements allow you to use a single piece.

One important reminder: If your pattern includes backing yardage, use it as a helpful starting point, but check what allowances it assumes. When in doubt, your longarm quilter's requirements take priority.

4. Plan Your Seams and Print Direction

If you're using regular-width fabric, think about how the backing panels will fit together before you cut them.

Decide where you want the seams

You can join panels side by side or arrange them so the seams run across the back. Which layout uses less fabric depends on the quilt's dimensions and the usable width of your fabric.

For a simple backing, sketch the dimensions on paper and compare the two possible layouts. This small step can help you avoid purchasing an unnecessary extra length of fabric.

Check the direction of the print

Some prints look good in any direction. Others have a clear top and bottom, such as trees, animals, lettering, or directional motifs.

If you're using a directional print, decide how you want it to appear when the quilt is finished. The most fabric-efficient layout may not be the one that gives you the look you want.

Stripes and plaids may also need more planning if you want their lines to align across a seam. Don't assume that two panels will match automatically just because they're cut from the same fabric.

Consider the seam allowance

When joining backing panels, account for the seam allowance in your calculations. The finished width will be smaller than the sum of the original panel widths.

Remove the selvages where needed, sew the panels together using a consistent seam allowance, and press the seams so the backing lies flat. Follow your quilting pattern or longarm provider's instructions if they specify a preferred seam treatment or orientation.

5. Prepare Your Backing Before Quilting

Once your fabric is cut and your layout is planned, take a few minutes to prepare the backing.

• Check the care instructions. Decide whether you want to prewash based on your usual quilting practice, the fabric's care guidance, and the requirements of the project. For more information on fabric care read our How to Prepare Quilting Fabric article.
• Press the fabric. Smooth out wrinkles and folds so the backing is easier to measure and position.
• Sew and press any seams. Make sure the backing is flat and the seams are secure.
• Square the backing. Check that the edges are straight and the corners are as square as practical.
• Measure again. Confirm that the finished backing still meets the required dimensions after piecing and pressing.
• Follow your quilter's instructions. If you're sending the quilt to a longarm service, check their requirements for backing size, seams, and preparation before you deliver it.

The goal is to give yourself enough room to work without trying to stretch a backing that is too small. A little extra fabric is much easier to manage than discovering you don't have enough once quilting begins.

6. Common Quilt Backing Mistakes to Avoid

Even experienced quilters can get caught by backing details. Here are a few things to watch for.

Buying fabric based on the quilt top alone. Your backing needs extra room around the edges for quilting and trimming. Start with the required backing dimensions, not just the top's finished size.

Assuming every fabric has the same usable width. Selvages, manufacturer specifications, and the width remaining after preparation all affect your calculations. Check the fabric you're actually buying.

Forgetting about print direction. A directional design can affect both the layout and the amount of fabric you need.

Cutting before checking with your longarm quilter. Different quilters and quilting setups can have different requirements. Confirm them before you commit to your measurements.

Leaving no room for error. Fabric can shift, edges may need squaring, and your calculations may need adjusting. Build in a sensible allowance rather than buying the bare minimum.

Ready to Choose Your Backing?

Choosing backing fabric doesn't need to be complicated. Start with the look you want, confirm the size your quilt requires, and decide whether regular-width fabric or wide backing is the better fit for your project.

A coordinating print can make the whole quilt feel connected. A quiet blender can let the quilting shine. And a pieced backing can turn favorite leftovers into something special.

However you choose to finish your quilt, give the backing a little planning time before you cut. You'll be glad you did when everything is ready to quilt.

Looking for fabrics for your next project? Explore the quilting cottons and coordinated prints at North Star Quilt Shop to find a backing that feels right for your quilt.