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Warp length calculator

Find how long to wind each end, including shrinkage, take-up, loom waste, and gaps.

Free · no account

Enter your measurements

in · Include cloth for hems; exclude fringe.
Whole pieces.
% · On-loom cloth to finished cloth.
% · Straight yarn beyond on-loom cloth length.
in · Include fringe at the two outside ends.
in · Include neighboring fringes; ignored for one piece.

Your result

How the calculation works

[pieces × finished length ÷ (1 − cloth loss) × (1 + warp take-up)] + outer waste + between-piece gaps

This tool gives length per warp end. It does not give the total yarn on all ends. A purchase reserve buys extra yarn but does not change the length already wound.

Full calculation methodology

Worked example

For one 68 in scarf with 10% length loss, 5% warp take-up, and 24 in waste, wind 103.33 in (2.87 yd) per end. Sampling is additional; use the main planner to include it.

Use the complete weaving planner to connect the dimensions, allowances, and yarn quantities for one project.

Reference: Planning references and independent arithmetic. Calculations run locally.

Continue your plan

Plan your warp

Warp yarn yardage calculator

Turn an end count and winding length into total warp yarn and a purchase reserve.

Measure and adjust

Weaving shrinkage calculator

Measure sample loss or growth and calculate the starting size needed for a finished target.

Plan your warp

Warp ends and threading repeat calculator

Calculate body ends, round up to a complete threading repeat, and add floating ends.