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THE FEUTEX TOOLKIT

Weaving Weft Yarn Requirement

Estimate weft length from finished cloth dimensions, pick density, take-up and loom waste.

Crafts workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaTotal picks = Math.ceil(length*picks); Weft yarn required = Math.ceil(length*picks)*width/100*(1+takeup/100)+waste

Made for real tasks

  • Estimate weft length from finished cloth dimensions, pick density, take-up and loom waste.
  • Compare an alternative set of measurements without uploading personal data.
Explore step-by-step workflows →

Worked example

Inputs

Reed width
60 cm
Woven length
200 cm
Picks per cm
8 picks/cm
Weft take-up allowance
10 %
Additional weft waste
15 m

Expected results

Total picks
1600 picks
Weft yarn required
1071 m

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter reed width, woven length, picks per cm, weft take-up allowance, and additional weft waste in the displayed units.
  2. Calculate and use each labeled result for weaving weft yarn requirement. Compare the result with a measured sample before committing materials.

Try this example

{
  "width": 60,
  "length": 200,
  "picks": 8,
  "takeup": 10,
  "waste": 15
}

Accuracy and scope

Use reed width rather than finished width; allowance is measured, not a fiber-specific prediction.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.