Even Increases and Decreases Calculator (Knitting and Crochet)

What this tool does

When a pattern says 'increase 12 stitches evenly across 80', the gaps rarely come out whole: 80 ÷ 12 is 6⅔, so you work some sections of 6 plain stitches and some of 7. The calculator gives the two lengths and how many of each, so you can spread the longer ones around rather than bunching them. For increases the plain stitches are all your current stitches; for decreases, each k2tog or ssk uses up two stitches, so those come off first and the rest are shared out. Allow for any edge stitches that you will not be working into on a flat row.

Formula

plain stitches to spread = n (increasing) or n − 2 × changes (decreasing) · section = ⌊plain ÷ changes⌋, with the remainder as longer sections

Variables

Worked example

Limitations

• The calculation runs at full precision and only the display is rounded. If you copy an intermediate value and retype it, small differences can appear.
• The result is an estimate based only on the values you type. Real situations often include factors this calculator does not know about.