Even Stitch Increase and Decrease Planner
Distribute one-stitch increases or two-to-one decreases among unchanged stitches while preserving exact input/output counts.
YOUR CALCULATION
Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Determine the number of count-changing events, then distribute unchanged stitches across the gaps before, between and after those events.
Increase: consume 1, produce 2; decrease: consume 2, produce 1; events=|target−old|
Worked example
Changing 40 stitches to 46 uses six increases and 34 unchanged stitches. Changing 40 to 34 uses six decreases consuming 12 old stitches plus 28 unchanged stitches.
Assumptions and input details
Numeric operations only: an increase is defined as 1→2 and a decrease as 2→1. At most one increase per old stitch; decreases cannot consume more than the available old stitches. Up to 200 events, 10000 old stitches. Unchanged stitches are spread with cumulative integer rounding; group sizes differ by at most one. Edge motifs, knit/crochet stitch technique, garment fit and a specific pattern’s shaping requirements are outside this count plan.
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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