How Much Binding for a Baby Quilt?
A 40 x 40 inch baby quilt needs about 172 inches of binding, which is 5 strips cut 2 1/2 inches wide across 42 inch fabric, or 3/8 yards. That is the 160 inch perimeter plus 12 inches for the mitered corners and the closing join. For continuous bias binding, start with a 26 inch square.
Binding is the folded strip of fabric that wraps the raw edges of a finished quilt, enclosing the top, the batting and the backing in one pass. This page covers a baby quilt of 40 x 40 inches, the same size used on the baby backing page. For any other size, the quilt binding calculator uses the same formula.
The table below is the whole binding plan for this quilt: 172 inches of binding to make, 5 strips cut at 2 1/2 inches, 3/8 yards of fabric.
| Quilt perimeter | 160 in (4.4 yd) |
|---|---|
| Binding length to make | 172 in, including 12 in extra |
| Strips (2 1/2 in wide) | 5 |
| Fabric needed | 3/8 yd |
| Bias binding square | 26 x 26 in |
How much binding do you need for each strip width?
Wider strips suit thicker batting, so check the loft of what is going inside the quilt in how to choose quilt batting before cutting. Each diagonal join uses about one strip width of length, which is already included below. Strips are cut across 42 inch cotton with about 40 inches usable, the working figure explained in the fabric width chart. At the standard 2 1/2 inches this quilt needs 5 strips; at 3 inches it needs 5.
| Strip width | Strips | Straight-grain yardage | Bias square |
|---|---|---|---|
| 2 in | 5 | 3/8 yd | 23 in |
| 2 1/4 in | 5 | 3/8 yd | 25 in |
| 2 1/2 in | 5 | 3/8 yd | 26 in |
| 2 3/4 in | 5 | 1/2 yd | 28 in |
| 3 in | 5 | 1/2 yd | 29 in |
How do you bind a baby quilt, step by step?
- Cut the strips. Cut 5 strips 2 1/2 inches wide across the width of the fabric, selvage to selvage, using a rotary cutter, mat and long ruler.
- Join the strips on the diagonal. Lay two strips right sides together at a right angle, sew corner to corner, trim to a 1/4 inch seam and press open. Diagonal seams spread the bulk so the binding lies flat.
- Fold and press. Fold the long strip in half lengthwise, wrong sides together, and press. You now have about 190 inches of double-fold binding for a quilt that needs 172 inches.
- Sew to the quilt front. Starting partway down one side and leaving a 10 inch tail, sew the raw edges to the quilt front with a 1/4 inch seam, using a walking foot if you have one.
- Miter the corners. Stop 1/4 inch before each corner, backstitch, fold the binding up at 45 degrees and back down along the next edge, then continue sewing.
- Join the ends and finish. Overlap and join the tails, sew the last section down, then wrap the folded edge to the back and hand stitch or machine stitch it in place, holding it with binding clips.
For photos of every step and troubleshooting for wavy edges and bulky corners, read our full guide on how to bind a quilt.
What tools make binding a baby quilt easier?
Accurate strips start with a sharp rotary cutter and a long ruler. When you stitch the binding down, a machine with an even feed or walking foot keeps a quilt this size from shifting under the needle. A jelly roll skips the cutting altogether, since its strips are already 2 1/2 inches wide: a baby quilt uses 5 of the 40 strips in a roll.
Tools for cutting and sewing baby binding
Olfa 60mm Ergonomic Squeeze-Handle Rotary Cutter RTY-3/DX
Under $50A 60 mm blade cuts through several layers of binding fabric at once.
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Creative Grids 12-1/2 x 24-1/2 Rectangle Quilt Ruler
Under $100A 24 inch non-slip ruler for straight, true strips.
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Clover Wonder Clips (50 Pack)
Under $25Clips hold folded binding without pin pricks while you hand stitch.
Check pricePrices change often, so confirm on Amazon. As an Amazon Associate we earn from qualifying purchases.
Frequently asked questions
How many binding strips do I need for a baby quilt?
For a 40 x 40 inch baby quilt, cut 5 strips of 2 1/2 inch binding across 42 inch fabric. The math is the perimeter of 160 inches plus 12 inches for corners and the final join, divided by about 37.5 usable inches per strip after the diagonal seams. Round up, and cut one extra if your fabric is narrow after prewashing.
How much fabric do I need for baby quilt binding?
5 strips at 2 1/2 inches wide use 12.5 inches of fabric, which rounds up to 3/8 yards. Wider 2 3/4 inch strips, popular for thick batting, need 5 strips and 1/2 yards. Buy the binding fabric with the rest of the quilt so the dye lot matches.
What width should quilt binding strips be?
Two and a half inch double-fold binding is the most common choice and finishes about 3/8 inch wide on a quilt with average batting. Use 2 1/4 inches for a slimmer look on thin cotton batting, and 2 3/4 to 3 inches for high-loft or wool batting. Always test a short length on a scrap sandwich first.
Do I need bias binding for a baby quilt?
Only if the quilt has curved or scalloped edges, or you want a very durable edge for a quilt that will be washed often. Straight-grain strips cut across the width of fabric are perfectly fine for square corners. Bias binding needs more fabric handling, and for this size you would cut it from a square about 26 inches on each side.
What are some binding ideas for a baby quilt?
Scrappy binding pieced from leftover strips is the simplest change and costs nothing extra: a jelly roll is already cut to 2 1/2 inches, so 5 of its 40 strips bind this quilt. Flange binding sews two fabrics together so a narrow line of accent color shows along the edge. A striped print cut on the bias gives a candy cane edge with no extra piecing.
What size square do I need for continuous bias binding on a baby quilt?
Start with a square about 26 x 26 inches, which is 3/4 yards of fabric. Cut it corner to corner, join the two triangles, mark 2 1/2 inch lines across the parallelogram, then sew it into an offset tube and cut along the marked line to get one continuous strip. The square size already allows a little extra for the joins.
Should I sew binding by hand or by machine?
Both are sound. Machine binding is faster and very durable, which suits quilts that will be used and washed often. Hand stitching the back gives an invisible finish that many quilters prefer for heirloom and show quilts. A walking foot helps keep the layers even when sewing the binding to the front, whichever finish you choose.
How we research: we compare manufacturer specifications, owner manuals, published standards and recurring themes in verified owner reviews. We do not test products in person, and this is researched guidance, not professional advice. Follow your machine manual and pattern, and take care with rotary cutters, hot irons and needles. As an Amazon Associate we earn from qualifying purchases.
