QUILT PLANNING / BACKING
Quilt finishing: a 60 × 80 inch worked example
Follow a 60 × 80 in rectangular quilt from measuring to a backing, binding and batting shopping list. This is a worked planning example with original diagrams, not a photographed or independently sewn project.
1. Measure your actual materials
Lay the quilt top flat without stretching it. Measure both sides and through the center in each direction; investigate differences before cutting. This example uses a square, rectangular top measuring 60 × 80 in. Measure usable fabric width after removing selvages: the example uses 42 in, not the bolt’s nominal width.
Ask your quilter how much extra backing and batting they need. We use 4 in on every side, giving 68 × 88 in for each. Prewashing, shrinkage and pattern matching are not included; measure after any intended prewashing and allow additional fabric for squaring.
2. Cut and assemble a full-panel back
Use a ½ in seam allowance on each joined edge. Cut two pieces, each 42 × 88 in. The total cut length is 176 in, or 4.889 yd; rounded up to eighths, buy 5 yd.
- Mark both 88 in cuts and check the measurements before cutting. Keep any one-way print in the intended orientation.
- Place panels right sides together and join their long edges with ½ in on each edge.
- Press the seam as required by your quilter. The sewn width is 42 + 42 − 1 = 83 in.
- Check the finished rectangle before trimming to 68 × 88 in. Position the seam where your quilter permits it; do not accidentally trim away the required loading allowance.
3. Cut and join straight-grain binding
The quilt perimeter is 280 in. Add 12 in for finishing to get 292 in. With 2½ in wide strips and 45° joins, eight 42 in strips yield 336 − 7 × 2½ = 318½ in after joining. Seven yield only 279 in. Cut 8 strips at 2½ in × 42 in; the 20 in bolt length rounds to ⅝ yd.
- Cut strips across the measured usable fabric width. The 2½ in is the cut width before folding.
- Place two squared strip ends right sides together at right angles. Mark and sew the diagonal across the overlap, checking the unfolded alignment before trimming the seam excess.
- Repeat for all seven joins; press and fold the assembled strip lengthwise for double-fold binding.
- Test a short strip around a scrap sandwich made with the same batting. Adjust strip width or attachment seam if it does not wrap comfortably.
- Follow your pattern’s corner and closing instructions. The finishing allowance is additional working length, not a guarantee that every finishing method will fit.
4. Check all three purchases
- Backing: 5 yd of fabric with at least 42 in usable width.
- Binding: ⅝ yd of separate fabric with at least 42 in usable width.
- Batting: a piece at least 68 × 88 in.
Do not add batting dimensions to fabric yardage. The whole-project editor in either calculator lets you change both fabric settings without visiting the other tool. Confirm all three materials before copying or printing.
5. Consider alternatives before cutting
A 106 in usable wideback can cover the 88 in dimension with a 68 in bolt cut: buy 2 yd with eighth-yard rounding. The advanced three-piece layout uses a 42 × 88 in main panel plus two pieces cut 44½ in across the bolt by 27 in down it—but 44½ in does not fit a 42 in bolt, so that orientation is rejected. Rotating the assembly gives a valid alternative: cut A at 42 × 68 in, then B and C each 34½ in across the bolt × 47 in down it. Rotate B and C, join them into a 47 × 68 in column, then join to A. The sewn back is 88 × 68 in. Total cut length is 162 in, or 4½ yd—½ yd less than the full-panel plan, with one additional seam and rotated pieces. Use this only for suitable nondirectional fabric and an accepted seam layout.
This geometric check matters: a formula based only on area or total cut length can recommend pieces that do not fit the available width. The planner offers only supported arrangements and never claims the global minimum.
For curves, use the separate bias-strip planner and enter the measured edge length. The main straight-grain shopping list does not automatically become a bias plan.
What has been verified?
The example’s arithmetic, seam coverage and software outputs are covered by automated checks. No independent sewing review or finished-project photographs are claimed. A real maker review would need the actual fabric measurements, cutting photographs, seam measurements and finished backing size; those records are not yet available.
Open the whole-project shopping list →
Read our calculation methods and limits. Examples use the same arithmetic as the calculators and are planning estimates, not independently field-tested sewing instructions. Confirm allowances with your quilter.