Measure Your Quilt and Cut Border Strips
Before you cut a single strip, measure your quilt top in three places: down the left side, across the middle, and down the right side. Write down all three measurements. The sides of a quilt often measure slightly different lengths because the fabric has shifted during piecing, so you need the actual numbers, not the pattern's promised size.
Cut your border strips to match the longest of these three measurements. If your left side measures 48 inches, your middle measures 48.5 inches, and your right side measures 48.25 inches, cut your left and right border strips to 48.5 inches. This extra length gives you room to ease the quilt edges and keeps the finished quilt square instead of wavy.
Cut border strips on the grain line of your fabric — parallel to the selvage edge — unless your pattern specifies otherwise. Most borders are cut 2.5 inches wide finished, which means you cut them 3 inches wide to account for the half-inch seam allowance on both sides.
Key Takeaways
- Measure your quilt in three places and cut border strips to the longest measurement to prevent wavy edges.
- Sew the top and bottom borders first, then the side borders, pressing after each step to keep the quilt flat.
- Use a quarter-inch seam allowance and pin every few inches to distribute fabric evenly and avoid puckers.
- Press borders away from the quilt center after sewing to reduce bulk in the seams.
Sew the Top and Bottom Borders
Fold your top border strip in half lengthwise and crease the center with your fingers. Do the same with the top edge of your quilt. Line up these center creases and pin them together. This keeps the border from bunching on one end.
Pin the border to the quilt top at quarter-inch intervals — roughly every 2 to 3 inches — working outward from the center crease toward both ends. The pins should go through both the border and the quilt top. If your border is longer than your quilt edge, the extra length will bunch slightly between pins, which is normal and will be eased in as you sew.
Sew the border to the quilt using a quarter-inch seam allowance. Sew with the quilt on top and the border underneath, so the feed dogs pull the quilt fabric through and ease it onto the border. Remove pins as you approach them. Press the border away from the quilt center — this pushes the seam allowance toward the border and reduces bulk.
Repeat this process for the bottom border, measuring and cutting to match the width of your quilt after the top border is attached.
Sew the Side Borders
Measure the length of your quilt from top to bottom, including the borders you just added. Cut your left and right border strips to this new measurement. The quilt is now taller than it was before, so the side borders must be longer than the original side measurement.
Fold each side border in half lengthwise and crease the center. Fold the left edge of your quilt in half and crease it. Pin the border to the quilt at the center crease, then pin at quarter-inch intervals working toward the top and bottom corners. Sew with the quilt on top, using a quarter-inch seam allowance, and press the border away from the center.
Repeat for the right border. After both side borders are sewn and pressed, your quilt top is complete and ready for backing and batting.
Trim and Square Up the Corners
After all four borders are sewn, lay the quilt on a flat surface and check the corners with a large square ruler. The corners should be 90 degrees. If they are not, the quilt will not lie flat when you layer it with batting and backing.
If a corner is slightly off, use a rotary cutter and ruler to trim it square. Place the ruler so the corner of the ruler sits exactly at the corner of the quilt, and trim along the edge. Do this for all four corners. Trim only a quarter-inch or less — cutting more than that wastes fabric and changes the finished size.
Press the Finished Border
Press the entire quilt top with a hot iron and steam, working from the center outward. Press the borders flat, not toward the center. This sets the seams and removes any wrinkles or puckers that formed during sewing.
If you are adding multiple borders, press after each border is complete. This keeps the quilt flat and makes it easier to measure for the next border. A flat quilt is much easier to layer with batting and backing later.
Add a Second Border If Your Pattern Calls for It
Some quilts have two or more borders. If yours does, repeat the entire process: measure the quilt, cut strips to the longest measurement, sew the top and bottom borders, then the side borders, and press after each step. The second border is sewn exactly the same way as the first.
The only difference is that you are now measuring a quilt that already has one border attached, so your measurements will be larger. Always measure the actual quilt, not the pattern instructions, because every quilt shifts slightly during piecing.
Frequently Asked Questions
What if my border is too short after I cut it?
Cut a new strip. Borders that are too short will pull the quilt edges inward and create wavy sides. It is better to cut again than to force a short border onto a longer edge.
Can I sew the side borders first instead of the top and bottom?
Yes, but measuring becomes more complicated. Most quilters sew top and bottom first because the quilt is narrower and easier to handle. If you prefer to sew sides first, measure and cut the same way — always to the longest measurement.
Why does my border have puckers even though I pinned it?
Puckers usually mean the border was sewn too tightly or the quilt was stretched as it went through the machine. Sew with the quilt on top so the feed dogs pull the quilt through at the correct speed. If puckers appear, you may need to remove the seam and resew with more pins or less tension on the thread.
How wide should my border be?
Most borders are 2.5 inches wide finished, which means you cut them 3 inches wide. Wider borders (3 to 4 inches finished) frame larger quilts well. Narrower borders (1.5 to 2 inches finished) work better on small quilts. Your pattern will specify the width.
Do I need to use the same fabric for all four borders?
No. Many quilts use different fabrics for different borders, or a different fabric for the side borders than the top and bottom. Your pattern will show which fabric goes where.