Quilt finishing calculator

Quilt Border Calculator

Get cut lengths, WOF strips, fabric yardage, and the final size of your quilt top.

Plan Your Straight Borders

Uses side borders first, then top and bottom borders with straight, butted corners.

Your Border Plan

Buy 1 yard

Final quilt top: 68" × 80"

Cut From Your Border Fabric

Border cut width
4 1/2"
WOF strips
Cut 8 strips at 4 1/2" × 42"

Layer 1

Side borders
Cut 2: 72" long (finish 72"; 2 WOF segments each)
Top & bottom borders
Cut 2: 68" long (finish 68"; 2 WOF segments each)

Each straight WOF join uses a 1/4" seam, so the strip count includes a 1/2" loss per join. Yardage rounds up to the next 1/4 yard.

Continue with this quilt size in the Quilt Planner

How This Plan Works

Sew the two side borders first, then add the top and bottom borders across the new width. For two layers, the second layer starts from the first layer’s finished size.

View assumptions
  • All borders use one entered finished width and one border fabric.
  • Cut width includes a 1/4" seam allowance on each long edge; strip lengths match the measured attachment edges.
  • When a border needs multiple WOF segments, this plan uses straight end-to-end joins. Each join uses a 1/4" seam and reduces usable length by 1/2".
  • WOF yardage rounds up to the next 1/4 yard; buy extra for directional prints or matching.

Measure Through the Center

For flatter borders, measure the quilt top through the center rather than following a stretched outer edge. Press the side borders, then measure across the center again before cutting the top and bottom strips.

FAQ

Measure through the center of the quilt top instead. After sewing the side borders, measure through the center again before cutting the top and bottom borders.

This calculator sews the side borders first. The top and bottom borders then span the original quilt width plus both finished side borders.

No. It plans straight, butted borders only. Mitered corners need different cutting lengths.