Warp, weft, yardage, sett, loom waste

Weaving Calculator

Plan a weaving project, estimate warp and weft yarn, save your loom assumptions on this device, and print a project card for the loom bench.

Current estimate 0 yd Complete the core fields to calculate.

Calculator

Project Inputs

Project

Project name Status Preset

Project notes

Imperial Metric

Finished width in Finished length in Quantity

Loom

Loom profile Loom type

Max weaving width in Front waste in Back waste in

Saved profiles stay on this device. Export projects before clearing browser data.

Warp and Weft

Sett EPI Picks per inch PPI Extra ends

Balanced Weft-faced Warp-faced

Sampling in Fringe each end in Gap between items in

Advanced assumptions

Width shrinkage % Draw-in % Length shrinkage % Warp take-up % Weft take-up % Safety margin %

Finished actuals

Actual width in Actual length in Actual yarn used yd

Finishing notes

Yarn and Cost

Warp yarn name Weft yarn name

Warp package yd Warp price $ Weft package yd Weft price $

Printable

Project Card

Transparent math

How this calculator works

Planning guide

What to check before winding a warp

The estimate depends on your loom, yarn, sett, picks per inch, take-up, shrinkage, sampling, and fringe. Treat the result as a planning number, then sample when yarn cost or fit matters.

Loom waste

Save loom waste per loom. Rigid heddle, table, and floor looms can behave differently, and your own measured waste is better than a generic default.

Sett and PPI

Balanced cloth usually starts with EPI and PPI near each other. Weft-faced or warp-faced projects intentionally push those numbers apart.

Sampling

Sampling adds yardage now but lowers risk later. Keep notes after finishing so the next estimate is closer.

Tool library

More weaving and yarn calculators

Warp and Weft Calculator Plan warp length, ends, and weft yardage. Sett Calculator Estimate EPI from WPI and weave structure. Weaving Sett Chart Common starting setts by yarn size. Loom Waste Guide Measure and save waste by loom. Take-Up and Shrinkage Use allowances without hiding assumptions. Yarn Yardage Calculator Estimate yarn from project and swatch data. Grams to Yards Calculate remaining yarn by weight.