Knitting increase calculator
Make a row plan that distributes M1 increases evenly while preserving the original stitches at each edge.
Up to 10,000 original stitches and 1,000 increases. At least one interior gap must remain for each increase. Decreases are outside this tool. Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to use Knitting increase calculator
- Enter the measured inputs and select their units.
- Review the calculated dimensions, counts and rounding.
- Download the result and verify it against a sample before making the full project.
Useful next steps
Use the right increase operation
This plan uses M1 between existing stitches. Each increase adds one stitch without consuming an original stitch. It is not a kfb plan. Enter the starting count, desired final count and any stitches to preserve on each edge.
Work the original row once
Increasing 12 stitches to 15 gives: work three, M1; work three, M1; work three, M1; work three. Less regular counts produce near-even spacing. Download every step and its position among the original stitches.
Save the calculation
Download a CSV of the results or instructions, a readable text report and a JSON report with values, formulas and assumptions. Calculations run locally on your device. Unit changes keep the numbers already entered, so check the selected units before using the result.