Colorwork Chart Calculator

Stranded colorwork burns noticeably more yarn per stitch than solid-color knitting because of the floats carried behind the working yarn, and this calculator accounts for that directly: it takes your total stitch count and splits it across up to three colors by their entered percentages (normalized so they always sum to 100% even if your inputs don't add up exactly), then multiplies each color's stitch share by your yards-per-stitch figure and a flat 15% float allowance before converting to yardage. Color C's stitch count is derived as a remainder — total minus A and B — which guarantees the three colors always add back up to your total stitch count exactly, even after independent rounding of A and B. Setting Color C's percentage to zero collapses this into a standard two-color calculation.

The 15% float factor is a reasonable general-purpose estimate for typical stranded (Fair Isle) colorwork with floats caught every few stitches, but it will understate yarn use for patterns with long uncaught floats or wide color blocks, and overstate it for tight, closely-spaced motifs where floats are short. This tool also doesn't distinguish stranded knitting from intarsia — intarsia uses separate yarn bobbins per color block with no floats at all, so applying the 15% float allowance there would overbuy yarn unnecessarily. As with any yardage estimate, buy each color with a small additional safety margin beyond what's shown, since dye lots and personal tension both introduce variance a calculator can't see.