The Simple Math Behind the German Short Row Knitting Method

Yesterday was a holiday, Ascension Day here in Finland, so I had the rare luxury of a day off. I finally carved out time to work on grading a laced-yoke summer tee, one of my new knitting designs. For quite some time, I’ve wanted to incorporate the German Short Row (GSR) method to shape the back collar of this design. However, I hesitated because I thought it might be too advanced for beginners.

Instead, I often defaulted to using side splits to differentiate the front and back pieces, an easy workaround, since the back is always longer. But this time, I decided to tackle the challenge head-on.

This article summarizes a universal way to calculate standard German Short Rows. I’ll include a glossary of abbreviations, two graphic examples, and the corresponding math. The best part: the logic behind it is no more complex than basic arithmetic progression.

If you’re short on time or just want the key takeaway, feel free to skip ahead to Section 4, where you’ll find the universal formula I rely on in my own design work.

1. Abbreviation

Understanding the following abbreviations will help you follow the visual examples:

  • K: knit
  • P: purl
  • St / sts: stitch / stitches
  • RS: right side
  • WS: wrong side
  • Ds: create a double stitch, by “turn & pull”
    • Turn the work, move the working yarn to the front.
    • Slip the first stitch from the left needle to the right needle purl-wise.
    • Pull the working yarn backward around the right needle.
    • If the next stitch is a purl, turn the yarn to the front; if it’s a knit, turn it to the back.
  • Ktg: knit the two “legs” (double stitch) together
  • Ptg: purl the two “legs” (double stitch) together
  • BoR: beginning of the round

2. Example 1: German Short Row Based on a 4-Stitch Increase

Click the picture below to expand

The math is summarized in the table below:

3. Example 2: German Short Row Based on a 3-Stitch Increase

Click the picture below to expand:

The math is summarized in the table below:

4. The Universal Formula

At its core, the GSR shaping method is a simple arithmetic progression. Once you identify your starting stitches (X) and total added stitches (Y), you can calculate the number and placement of turns using a stepwise formula. This standardization can make the method more approachable, even for beginners.

This summary is my personal cheat note: something I always refer to when working on a new design. I hope it helps you too, whether you’re a fellow designer or simply a passionate knitter looking to shape garments with more confidence and precision.

May 30, 22:51 Meihaka, Helsinki 12°C

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