Knitting Increase Calculator

Why Even Spacing Matters

A hat crown, a raglan yoke, a sleeve cap — any time a pattern tells you to "increase 12 stitches evenly across the round," it's relying on you to space those increases so the extra fabric distributes smoothly instead of bunching up on one side. Do the math wrong and the fix is rarely invisible: an unevenly spaced increase round shows up as a slight pucker or a visible seam-like line once the piece is blocked, especially in stockinette where every stitch reads clearly.

How to Use This Calculator

Enter the stitch count you're working with right now (before the increases or decreases), and how many stitches the pattern asks you to add or remove. The calculator splits your round or row into two slightly different segment lengths — most stitch counts don't divide evenly, so a mix of two spacings is how real patterns handle the remainder rather than rounding it away.

How We Calculate It

Divide the current stitch count by the number of increases (or decreases) needed. The whole-number result is your base segment length, and whatever's left over becomes the number of segments that get one extra stitch. So 140 stitches with 21 increases needed gives a base segment of 6 stitches with a remainder of 14 — meaning 14 segments of "knit 7, increase 1" and the remaining 7 segments of "knit 6, increase 1," for exactly 21 increases spread as evenly as the numbers allow. Decreases follow the identical spacing logic; only the direction changes.

A Few Notes

This calculator tells you where to place each increase or decrease, not which technique to use — kfb, M1L/M1R, yarn overs, k2tog, or ssk all work with this same spacing, so pick whichever your pattern (or your preferred look) calls for. If you're working flat rather than in the round, remember the first and last stitch of a row are usually kept plain as a stable edge before you start counting segments, so subtract those from your working count first.