how to determine quilt border size with only one border
Adding a single border to your quilt is an excellent way to frame the design and enhance its overall look. However, determining the correct border size requires some simple calculations to ensure balance and proportion. Here’s how to determine the quilt border size with only one border.
Step 1: Decide on the Purpose of the Border
Before selecting a border size, consider its function. Is it purely decorative, or does it need to increase the overall quilt size? The answer will help you determine the appropriate width for the border.
Step 2: Measure the Quilt Top
Start by measuring the width and length of your finished quilt top before adding the border. Use a measuring tape and take the average of three measurements (top, middle, and bottom for width; left, center, and right for length) to ensure accuracy.
Step 3: Choose a Border Width
Here are some common guidelines:
- Narrow border (1-2 inches): Provides a subtle frame for small or intricate quilt patterns.
- Medium border (3-6 inches): Adds definition while maintaining balance.
- Wide border (7 inches or more): Best for large quilts or creating a dramatic effect.
Step 4: Calculate the Border Fabric Requirements
To determine how much fabric you need, use the following formula:
- Multiply the chosen border width by two (since it appears on both sides).
- Add this measurement to both the width and length of your quilt top.
- Measure the perimeter by adding the new width and length, then multiply by two.
- Divide by the fabric’s width (typically 40-44 inches) to calculate the number of fabric strips needed.
Step 5: Cut and Attach the Border
- Cut the border strips according to your calculated width and length.
- Attach the side borders first, then add the top and bottom borders.
- Press seams for a smooth finish.
By following these steps, you can easily determine the perfect quilt border size for a single-border design, ensuring a well-proportioned and visually appealing quilt. Happy quilting!

Barb, our resident quilter and embroidery aficionado, weaves a thread of creativity through our collection. Serving as the curator of machine embroidery content, Barb infuses each design with a touch of her artistic expertise. The free embroidery patterns you discover on our site often bear the mark of Barb’s craftsmanship. Let’s get crafting!