Phoebe Moon Quilt Designs

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Fabric Calculator

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This is a great little calculator to estimate how much quilt material you will need if you are creating your own quilt.  Just input the information requested and click on the Calculate button.  Always buy just-a-little-bit more to allow for miscalculations and cutting mistakes. There is no such thing as too much fabric!

If you aren't sure how big to make your quilt, see our chart of standard mattress, pillow and quilt sizes at the bottom of this page. There is even a pattern for making a "hot dog" pillowcase with all seams enclosed!  There are tips for making a pieced backing at the bottom of this page.

Click here for a binding calculator

Fabric Calculator
Width of Block:
(include seam allowance)
Height of Block:
(include seam allowance)
Number of Blocks Across Quilt:
Number of Blocks Down Quilt:
Fabric Width:
This is a picture of a calculator
Total Yardage Required:

Standard Mattress Sizes

Here is a chart of standard mattress sizes and likely quilt sizes.  The actual size of a quilt will vary depending on the drop (how much hangs over the edge, usually 21") and the pillow tuck, as well as personal preference.  Pillows can vary in size, too.  A standard size pillowcase is usually 20" x 26", a queen size is usually 20" x 30" and a king size is 20" x 36".  A pillowcase made with all seams enclosed (the "hot dog" method) is quick and easy, and makes a great gift.  Here are free directions in PDF form.


  Size of
Size of
of Pillow
Crib/Baby 27" x 52"  36" x 48"  
Lap    60" x 60" Square Decorative
Twin/Daybed 39" x 78"  81" x 110" Standard
College Twin 39" x 80"  81" x 115" Stardard
Waterbed Twin 48" x 84"  90" x 120" Standard
Full/Double 54" x 75"  96" x 110" Standard
Queen 60" x 80" 102" x 115" Queen
California King 72" x 84" 120" x 120" King

Tips for Pieced Backing

Graphic showing pieced backing

If your quilt is under 60" wide, a horizontal seam will often save on yardage. The examples above show a 60" x 80" quilt.  3 1/3 yards of standard width backing has been cut 60" long and pieced.

Graphic showing pieced backing

If your quilt is more than 60" wide, consider using a vertical seam. The examples above show a 80" x 80" quilt.  4 1/2 yards of standard width backing has been cut 80" long and pieced.  Depending on the cost of the fabric you are using to piece the backing, it may be more economical to buy 2 1/4 yards of extra wide backing.

Graphic showing pieced backing

If your quilt is over 80" wide, consider using the wide backing sold on this page.  In the 110" x 110" example shown above, you would need 9 1/4 yards of standard width fabric but only 3 yards of extra wide fabric.

Have another idea to offer? Send it me, and I will add it here. 

Still having trouble? Sometimes you just need to draw things out on graph paper. Fortunately, you can download what you need for free at this link:

More tips, tutorials and techniques are available at
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