Knitting Increase & Decrease Calculator
Calculate stitch spacing within one row and shaping positions across many rows. Set one or both edges and the starting face for right-side shaping, then get repeat instructions and row numbers. Every feature is free.
Knitting flat leaves half a space at each end so you do not increase or decrease right at the edge.
80 sts 92 sts
Increase 1 stitch about every 6~7 stitches.
- K3, M1
- [K7, M1, K7, M1, K6, M1] × 3
- [K7, M1] × 2
- K3
Three quick steps
Enter your counts
Enter the stitches you have and how many to add or remove, or the start and end counts and rows.
Pick how you knit
Choose flat or in the round, and whether to shape at both ends or one.
Follow the steps
Copy the sequence into your pattern notes and knit along.
Frequently asked questions
Common questions about spacing increases and decreases.
How are increases spaced evenly across a row?
The stitches are split into as many equal parts as increases. When they do not divide evenly, two spacings such as 6 and 7 are mixed through the row. In the round every space is equal; knitting flat leaves half a space at each end so nothing happens right at the edge.
Why are decreases worked out differently?
A decrease knits 2 stitches together, so each one uses 2 stitches. The instructions show how many stitches to knit between decreases, not counting the 2 that are worked together. One row can lose at most half its stitches.
What does 6-1-8 mean?
It is the rows-stitches-times notation common in Japanese and Korean patterns: 6-1-8 means shape 1 stitch every 6 rows, 8 times. For sleeves shaped at both edges, work 1 stitch at each end.
Why shape on right-side rows only?
Shaping on right-side rows is convenient when knitting flat. Choose whether row 1 in this section is a right-side or wrong-side row. Shaping follows the matching odd or even rows; the first interval can be odd.
Can I swap the order of the intervals?
Choose grouped intervals or an evenly mixed arrangement. If rearranging them yourself, preserve the total rows and stitches and keep shaping on the correct face when right-side-only is selected.
Which increase or decrease should I use?
The calculator only tells you where to shape. Use any increase your pattern calls for (M1, yarn over, kfb) and any decrease that removes one stitch (k2tog, ssk).