King size quilt dimensions
A king quilt is 108" × 108". A king mattress is 76" × 80", so this size hangs 16" over each side and 16" over the foot, with 12" left to tuck over the pillows.
A king mattress is as wide as two twin XLs side by side. A 108" square quilt is the standard king; store-bought king quilts are often 104" × 92", which covers the top with a shorter drop.
By Editorial Staff
King quilt sizes for a longer or shorter drop
The drop is how far the quilt hangs past the mattress. Measure from the top of your mattress down to where you want the quilt to stop; most mattresses today are 10" to 14" deep. Add the drop to both sides for the width and once for the length, then add 10" if the quilt should tuck over the pillows.
| Drop | Quilt size | With a 10" pillow tuck |
|---|---|---|
| 10" | 96" × 90" | 96" × 100" |
| 12" | 100" × 92" | 100" × 102" |
| 15" | 106" × 95" | 106" × 105" |
| 18" | 112" × 98" | 112" × 108" |
| 21" | 118" × 101" | 118" × 111" |
Blocks for a 108" × 108" quilt
Blocks keep their size and the count changes, so the quilt lands near 108" × 108" rather than on it. Each row is worked out with a 4" border; the second column adds 2" sashing between the blocks.
| Block | Side by side | Finished | With 2" sashing | Finished |
|---|---|---|---|---|
| 6" | 17 × 17, 289 blocks | 110" × 110" | 12 × 12, 144 blocks | 106" × 106" |
| 8" | 13 × 13, 169 blocks | 112" × 112" | 10 × 10, 100 blocks | 110" × 110" |
| 9" | 11 × 11, 121 blocks | 107" × 107" | 9 × 9, 81 blocks | 109" × 109" |
| 10" | 10 × 10, 100 blocks | 108" × 108" | 8 × 8, 64 blocks | 106" × 106" |
| 12" | 8 × 8, 64 blocks | 104" × 104" | 7 × 7, 49 blocks | 108" × 108" |
| 14" | 7 × 7, 49 blocks | 106" × 106" | 6 × 6, 36 blocks | 106" × 106" |
| 16" | 6 × 6, 36 blocks | 104" × 104" | 5 × 5, 25 blocks | 100" × 100" |
How much fabric for a king quilt
The top of a 108" × 108" quilt covers 11,664 square inches, which is 7.7 yards of 42" fabric before a single seam. Seams, triangles and 10% extra for straightening and mistakes bring the six patterns below to between 13½ yd and 17 yd for the top, binding included.
| Pattern | Finished | Blocks | Top and binding | Backing |
|---|---|---|---|---|
| Ohio Star | 108" × 108" | 49 | 14 yd | 9¾ yd |
| Log Cabin | 108" × 108" | 100 | 17 yd | 9¾ yd |
| Nine Patch | 108" × 108" | 289 | 14 yd | 9¾ yd |
| Half-Square Triangle | 108" × 108" | 289 | 13½ yd | 9¾ yd |
| Double Irish Chain | 108" × 108" | 100 | 13½ yd | 9¾ yd |
| Rail Fence | 108" × 108" | 289 | 13½ yd | 9¾ yd |
42" fabric, ¼" seams, 10% extra, each fabric rounded up to the next ¼ yard. Backing is 42" fabric with 4" extra on every side.
Backing, batting and binding for a 108" × 108" quilt
| What to buy | How it goes together | |
|---|---|---|
| Backing, 42" fabric | 9¾ yd | 3 panels 116" long, seams across, for a 116" × 116" backing |
| Backing, 108" wide | 6½ yd | Two widths, seamed |
| Batting | King, 120" × 120" | Covers the 116" × 116" the backing needs |
| Binding | 1 yd | 11 strips 2½" × WOF, joined into 444" |
The backing, batting and binding calculators work these out for any size, and the binding guide shows how to sew it on.
Resize any quilt to a king bed
Quiltspiration adds or removes blocks and recalculates every yard, in your own fabric.