Knitting increase
calculator
Find where to increase, keep your stitches balanced, and get back to the part you love.
Your stitch counts
Your pattern instruction
Spacing overview
Read left to right in working order. Each block is a group of operations, not a stitch chart or a scale drawing.
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Show each step
When your pattern says “increase evenly”
This tool distributes a specified number of increases across one row or one round. Enter the stitches currently on your needle and the number your pattern asks you to add. The result includes every original stitch once.
A worked example
With 100 stitches and 10 increases, you finish with 110 stitches. Each M1 creates a new stitch in a gap; it does not consume an existing stitch.
What do the abbreviations mean?
K followed by a number means knit that many stitches normally. M1 means make one new stitch between existing stitches. Use the M1L or M1R technique specified in your pattern; do not replace these instructions with kfb, which consumes an existing stitch.
Why are some intervals different?
Stitches are whole numbers. When the spacing does not divide exactly, neighboring intervals may differ by one stitch. Flat rows generally leave approximately half an interval at the ends; round spacing continues across the beginning-of-round marker.
Can I use this for ribbing, lace, or shaping a hat?
This is a plain-knit spacing aid. It does not preserve ribbing or lace repeats, reserve edge stitches, choose left/right shaping, or plan decreases over multiple rows. Follow your pattern for those details and swatch when fit matters.
What are the limits?
Use 2–5,000 current stitches and 1–1,000 changes. A k2tog plan cannot remove more than half the stitches in one pass. M1 plans place at most one increase in each gap: a flat row has one fewer gap than stitches, while a joined round also has a gap across its marker.
Technique references: Purl Soho’s M1 definitions and Brooklyn Tweed’s k2tog definition.