How do I evenly space increases across a row?

Use the "magic formula": divide your current stitch count by the number of increases PLUS ONE. The +1 centres the shaping so it is not jammed against the row ends. For example, 80 stitches and 10 increases is 80 / (10 + 1) = 80 / 11 = 7.27, so work an increase roughly every 7 stitches, spreading the 3 leftover stitches across the row. This calculator handles the maths including the leftover stitches.

What is symmetrical placement?

Symmetrical placement centres the increases or decreases so that there are equal numbers of plain stitches at each end of the row. This gives a balanced appearance, especially important for garment fronts and visible edges.

Why protect edge stitches?

Edge stitches (the first and last stitch of a row) form the selvedge which is used for seaming. Keeping these as plain knit stitches makes seaming easier and neater. Most patterns protect at least one stitch at each edge.

Can I spread changes over multiple rows?

Yes. If you have rows available, the calculator will tell you how to spread the changes. For example, 10 increases over 20 rows means one increase every 2 rows. This creates smoother shaping than doing all changes in one row.

Increase & Decrease Calculator — Free Knitting Technique Tool

Increase & Decrease Calculator — Evenly Space Shaping

Calculate evenly spaced increases or decreases across a row with pattern instructions and stitch marker placement.

Current Stitch Count

Total number of stitches in the row

Target Stitch Count

Total number of stitches in the row

Rows Available

1 for single row

How We Calculate This

This calculator works out how to evenly distribute increases or decreases across a row or over multiple rows.

The formula

Changes needed = |Target count - Current count|

Base spacing = Current stitch count / (Changes needed + 1)

For a flat row the row is split into (changes + 1) plain segments separated by the changes, so the shaping is centred rather than pushed to the row ends. Example: 80 stitches with 10 increases gives 80 / (10 + 1) = 7.27, so a base interval of 7 stitches with 3 leftover stitches spread one per segment. Symmetrical placement distributes those leftover stitches towards both edges so the framing plain stitches stay roughly equal.

Frequently Asked Questions

Last updated: March 2026

All calculations are estimates based on standard yarn weights and gauge. Results may vary with individual tension, yarn brand, and needle size.