King Quilt Size Guide
King quilts are large projects that require careful fabric planning. Wide backing fabric is especially popular for this size because it removes the need to piece a center seam.
Standard King Quilt Size
The standard king quilt size is 108 inches by 108 inches for a square king quilt. Some quilters make a 100" × 112" rectangular version for a California king mattress.
Wide Backing Fabric
108-inch wide backing fabric is ideal for king quilts. A 108" × 108" king quilt typically needs about 3.5 yards of wide backing, saving you from piecing multiple panels. Compare this with the queen guide to see how yardage scales with size.
Binding and Batting
Binding for a king quilt requires about 460 inches of total length, or roughly 12 WOF strips. Use king-size batting or a large cut measuring about 116" × 116".
King Quilt Planning Table
| Item | King (108×108) | California (100×112) |
|---|---|---|
| Backing (pieced 42") | 12 yd | 11 yd |
| Backing (108" wide) | 3.5 yd | 3.25 yd |
| Batting cut | 116×116 | 108×120 |
| Binding (2.5") | 12 strips (~460") | 12 strips |
Frequently Asked Questions
What is the standard king quilt size?
The standard king quilt size is 108 inches by 108 inches for a square king quilt. Some quilters make a 100 by 112 inch rectangular version for a California king mattress.
How much wide backing does a king quilt need?
A 108 by 108 inch king quilt typically needs about 3.5 yards of 108-inch wide backing, which covers it in a single piece without piecing panels.
How much binding does a king quilt need?
Binding for a king quilt requires about 460 inches of total length, or roughly 12 WOF strips at 2.5 inches wide.
What batting size should I use for a king quilt?
Use king-size batting or a large cut measuring about 116 by 116 inches so you have overage on every side for quilting and trimming.
Cutting & measuring
Tools that make fabric math easier
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Acrylic quilting ruler
Essential for accurate fabric cutting. Look for non-slip and clear grid lines.
View on AmazonRotary cutter (45mm)
Fast, clean cuts through multiple layers. Replace the blade when it skips threads.
View on AmazonSelf-healing cutting mat
Protects your work surface. Get the largest size your space allows.
View on AmazonPre-cut fabric bundle
Coordinated fat quarters or jelly rolls, ready to piece straight out of the pack.
View on AmazonFlat-head quilting pins
For pinning layers before basting. Extra-long pins help with thick sandwiches.
View on Amazon