How much fabric do I need for quilt borders?

Depends on quilt size, border width, number of rounds, and whether you're mitering corners. Yardage compounds fast with multiple rounds — enter your numbers above and let the calculator sort it out.

What is the difference between mitred and butted border corners?

Butted corners overlap at right angles — simpler and uses less fabric. Mitered corners meet at a 45-degree seam like a picture frame. Miters look sharper with stripes and directional prints but need longer strips and more precision. Choose based on the fabric.

How wide should quilt borders be?

Design call, but 2-6 inches finished is the typical range. Narrow inner borders (1-2") frame your blocks; wider outer borders (4-6") add size and visual rest. Rule of thumb: don't go wider than your blocks or the borders overwhelm the design.

Border Calculator

Yardage for borders (mitred or non-mitred)

Quilt center size (before borders), fabric width, corners and strip piecing. Enter finished width for each border; we add ½″ for strip width to cut.

Quilt center (before borders, in)

Width

Length

Width of fabric (in)

Corners

Non‑mitredMitred

Strip piecing

End‑to‑EndOn the diagonal

Number of borders

Border width (finished, in)

Border 1 (innermost first)

Border 2 (innermost first)

The one border rule that matters most

Measure through the center of your quilt, not along the edges. Edges stretch during piecing, and if you cut borders to match those stretched edges, you get wavy borders that won't lie flat. Measure the center in three places, average the numbers, and cut to that. Pin at the midpoint and ends first, then ease any fullness in between.

Butted corners are fine for most quilts and simpler to sew. Switch to mitered when you're working with stripes or a directional print — the 45-degree seam at the corners makes the print flow like a picture frame. Miters need longer strips and more care, but the result is worth it when the fabric calls for it.

Press seams toward the border after each round before adding the next. Sew the quilt side down so the feed dogs help ease in fullness rather than stretching the border. If your strips are longer than one WOF, join them with a diagonal seam to reduce bulk — same technique as binding strips.

Related Calculators

SashingYardage for sashing and cornerstones Backing & BattingYardage for backing and batting Blocks to Quilt SizeLayout and quilt size from block size and count

Track this quilt from start to finish

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