Quilting

Binding a Quilt: Strip Counts, Width and Yardage

Binding a quilt starts with enough fabric to travel around its entire edge, turn the corners and join the ends. Measure the quilt after quilting and trimming, then calculate the perimeter. Choose the strip width with a layered sample before cutting the full length.

This page explains the planning: strip counts, joining losses, yardage and checks before attachment. Use the quilting guide for the full project sequence. For the final hand stitches, go to how to bind a quilt.

Quilt binding: measure the finished perimeter

Measure the trimmed quilt's width and length on a flat surface. Do not use the original pattern size if quilting has changed the dimensions. The binding must fit the edge you have now.

For a rectangle, perimeter equals twice the width plus twice the length. A 42-by-54-inch quilt has a perimeter of 84 + 108 = 192 inches. That is the length around the cut edge before adding anything for joining the ends or handling corners.

For this example, allow 12 extra inches for the final end join and working room. The target becomes 192 + 12 = 204 inches. Check the tutorial you are following before cutting; its end-joining method may need more extra length.

Write both figures on your cutting list. Keeping the bare perimeter separate from the extra allowance makes it easier to revise the plan when the quilt's final size changes.

Count strips after allowing for diagonal joins

Measure usable fabric width after removing selvages. Do not assume that a bolt's listed width is all available for strips. Our example uses 40 inches of usable width, measured on the fabric in hand.

Suppose the strips are 2 1/2 inches wide and will be joined diagonally. Each join consumes about one strip width from the combined length. Six 40-inch strips start with 240 inches. Five joins use 5 × 2 1/2 = 12 1/2 inches, leaving about 227 1/2 inches before final trimming.

Five strips start with 200 inches. Four joins use 10 inches, leaving about 190 inches. That is shorter than the 204-inch target. Six strips are therefore the practical count for this example.

The estimate assumes square strip ends and correctly placed diagonal joins. It leaves room for small trimming losses. If your usable width is different, redo the calculation rather than borrowing the six-strip answer.

Turn the strip count into yardage

Six strips at 2 1/2 inches wide need 6 × 2 1/2 = 15 inches of fabric length. One yard is 36 inches, so 15 ÷ 36 is about 0.417 yard. That is the cutting requirement before adding room to square the fabric or allow for your preparation method.

A half yard provides 18 inches of length. In this example, that leaves 3 inches beyond the 15-inch strip total. Measure the prepared fabric before cutting, especially if it has been washed or has a slanted cut edge.

Keep these three measurements separate:

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A long narrow scrap may yield enough strips even if it is less than half a yard. Measure it and work out the strip placement on paper before cutting.

Choose strip width with a real sample

The width has to cover the first seam, turn around the layered edge and reach past that seam on the other side. Batting thickness and your final stitching method affect that fit.

Christa Quilts' binding tutorial shows double-fold binding with a machine attachment and hand finish. Use one complete method for the sample. Avoid taking the width from one tutorial and the seam allowance from another without checking their fit together.

Cut a short strip and fold it lengthwise, wrong sides together. Attach it to a scrap sandwich made from the project's top fabric, batting and backing. Wrap it around and see whether the folded edge covers the attachment seam comfortably.

For a machine finish, also test where the second line lands on the reverse. Our machine binding lesson explains that visible stitch path. The sample can save you from recutting every strip later.

Join the strips without twists

Place two strip ends right sides together at right angles. Sew a diagonal across their overlap so the strips open into one straight length. Test the direction on two scraps first; the wrong diagonal makes an elbow instead of a straight strip.

Open the join before trimming. Check that the strip runs straight and its right side stays on the same face. Trim the excess seam allowance and press as the tutorial directs. Join the remaining strips the same way until you have one continuous length.

Lay out the full strip and inspect every join. A twist may hide in a long coil. Fold the binding along its length only after the joins are correct. Keeping the work flat during this check makes the problem easier to see.

Before attachment, walk the prepared strip loosely around the quilt. Move the starting point if a diagonal join lands at a corner. A little planning here keeps extra bulk away from the corner folds.

How do you put a binding on a quilt?

Align the strip's raw edges with the quilt's raw edge and sew it to one face, leaving tails for the end join. Fold the strip at each corner as you go. Join the tails, finish the attachment seam, then wrap the binding and secure its folded edge on the other face.

Choose the first face to suit the last step. Front-first attachment suits a hand finish on the back. Back-first attachment can suit visible topstitching on the front. Mark your intended route on the sample so you do not switch methods halfway around.

Rest the quilt on the table while attaching the strip. Feed the binding without stretching it. A taut strip can pull the perimeter inward. If the edge starts to cup, stop and compare it with the unbound section before going farther.

How to do binding on a quilt with square corners

A mitered corner uses a diagonal fold to turn the strip without cutting it into separate sides. Stop the attachment seam one seam allowance from the corner. Fold the strip away from the quilt, then back along the next side so its raw edges align with that side.

The stopping distance must match the actual first seam width. For a 1/4-inch attachment seam, stop 1/4 inch from the corner. Mark the point on a practice sandwich until the motion feels familiar.

Do not trim the corner batting into a large notch to make the fold easier. First check whether the strip was folded correctly and whether a join has landed there. The binding overview helps compare strip formats if your edge still feels too bulky.

How to sew binding on a quilt without running short

Leave the final tails uncut until you are ready to join them. Spread that section flat. Confirm that the binding lies without tension, then follow the end-joining method from your chosen tutorial.

For the diagonal end join used with double-fold strips, the overlap is tied to the original cut strip width. That is why the strip width belongs in your records. Test the join with clips before sewing, and open it before trimming away fabric.

Verdict on binding a quilt

Binding a quilt goes more smoothly when length and width are planned separately. Measure the trimmed quilt, allow for strip joins, and make a layered fit sample. Keep the arithmetic with the project so the last seam is a sewing task instead of a fabric shortage.