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Top Down Triangle Shawl With Center Spine | With Size Calculator

Top Down Triangle Shawl With Center Spine Diagram

In the realm of knitting, there's always room for creativity and elegance. Enter the isosceles triangle shawl—a unique twist on the classic top-down triangle, featuring two isosceles triangles flanking a center spine. This design offers not only visual appeal but also ample opportunity for personalization, making it a delightful addition to any knitter's repertoire. Paired with an applied border, this shawl becomes a true masterpiece of needlework.

Shaping Rule:

The shaping rule for the isosceles triangle shawl is simple yet effective. For every other row, increase four stitches—two for each triangle. This gradual expansion ensures a balanced and symmetrical growth, resulting in a gracefully draped garment.


  1. Define Your Desired Depth: Begin by determining the depth you envision for your shawl.

  2. Gauge Your Swatch: Take the time to measure the stitch and row gauge of your blocked swatch. This step ensures precision in your knitting.

  3. Calculate the Rows to Work: Multiply the desired depth by the row gauge to determine the number of rows required.

  4. Determining Cast-On Stitches: Add the necessary stitches for the spine pattern to those required for each triangle.

  5. Final Stitch Count: Multiply the number of rows to work by 2, and then add the number of cast-on stitches to obtain the final stitch count.

  6. Wingspan Measurement: Multiply the depth by 2 and add the width of your center panel to determine the wingspan of your shawl.


Let's walk through an example to illustrate these steps:

  1. Desired Depth: Suppose you aim to knit a shawl with a depth of 12 inches.

  2. Blocked Gauge: Your blocked gauge swatch yields 5 stitches and 6 rows per 1 inch.

  3. Rows to Work: 12 inches × 6 (row gauge) = 72 rows.

  4. Stitches to Cast On: For the spine, you'll require 2 inches × 5 (stitch gauge) = 10 stitches. Additionally, allocate 4 stitches for the triangle start (2 on each side), totaling 14 cast-on stitches.

  5. Final Stitch Count: After completing the final row, you'll have 72 (rows) × 2 (increases per triangle) + 14 (cast-on stitches) = 158 stitches.

  6. Wingspan: The wingspan will be 12 inches (depth) × 2 = 24 inches, plus 2 inches (spine width), totaling 26 inches.


Now, let's delve into the pattern for the isosceles triangle shawl:

  • Row 1 (RS): K2, inc, k1, inc, pm, work spine, pm, inc, k1, inc, k2. [4 sts inc]

  • Row 2 (WS): Work to end.

  • Row 3: K2, inc, work to marker, inc, work spine, inc, work to last 2 sts, k2. [4 sts inc]

  • Row 4: Work to end.

Continue repeating Rows 3 and 4 until the shawl reaches your desired depth.

To facilitate your knitting journey, make use of our Shawl Calculator tool. Input your unique specifications—including desired depth, stitch gauge, row gauge, cast-on stitches, and spine stitches—and let it provide you with the necessary calculations to craft your shawl.


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