Knitting Increase Calculator

How it is calculated

Both stitch counts are first rounded to whole stitches. The number of increases is inc = target − current. The spacing is interval = floor(current / inc), the number of stitches worked between increases, and remainder = current − interval × inc is the number of stitches left over once every increase has its full gap. The tool does not place the leftover stitches for you: spread them by making a few gaps one stitch longer, or work them at the start or end of the row. It only handles growing a row: the target must be larger than the current count and the current count must be at least 1, otherwise there is no result. If increases outnumber stitches, the interval shows 0, which means some increases must sit next to each other.

Common mistakes

• Entering the number of increases as the target. The second field is the final stitch count after the row, not the number of stitches to add.
• Ignoring the remainder. If it is not 0, working the plain interval all the way across leaves the increases bunched at one end or the row short of the target.
• Counting stitches that belong to edges or button bands. Enter only the stitches that the even increase is meant to cover, and set the selvedge stitches aside.
• Using the tool for decreases. A target at or below the current count returns no result, so decreases need to be planned separately.
• Overlooking an interval of 0. When you add more stitches than you have, increases must touch each other, and a single-row increase may distort the fabric.