Free calculator
Yarn Quantity Calculator
Give the piece, the densities and the yarn count, then set the margin you are willing to carry. The calculator returns warp mass, weft mass, total and a skein count.
Inputs
Value in cm
Value in cm
Value in epi
Value in ppi
Value in Nm
Value in g
Result
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Fit
How this works
- The margin covers take-up, loom waste, broken ends, sampling and the mistakes you have not made yet. Fifteen per cent is the usual working figure.
- If you are dyeing your own yarn, buy the whole quantity in one lot: two dye baths never match exactly, and the difference shows as a band in the cloth.
- A skein count is always rounded up. Half a skein short is a stopped project.
Before you commit a warp
Every figure here is an estimate from published sett and count tables. Yarn varies between dye lots, spinners and fibres, so sample first. A sett that is too dense will abrade the warp and snap ends under tension; a sett that is too open will give a sleazy cloth that will not wear.
Loom waste and take-up are the two numbers people under-estimate most. Add 40–60 cm of waste on a small loom and 12 % or more for take-up.
Estimate only. These calculators model published behaviour so you can plan a warp with the working shown. They are not a guarantee of sett, shrinkage or quantity, and they do not replace sampling your own yarn on your own loom.
