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Loom Production Rate Calculator

Work out loom production rate instantly with clear inputs, formula shown and shareable results.

About Loom Production Rate Calculator

Loom output is picks per minute divided by picks per centimetre, giving centimetres of cloth per minute, scaled by loom efficiency. Fine weft density directly cuts output: doubling picks per centimetre halves metres per hour at the same loom speed, which is why dense fabrics cost more to weave.

Formula

Loom production

Fabric (m/h) = loom rpm / picks per cm x efficiency x 60 / 100

Worked example

With the default values below, Loom Production Rate Calculator returns Fabric Produced of 316.80. Change any input above and every figure here is recalculated in your browser.

Inputs used

Loom Speedminimum 0.01 picks/minute
600 picks/minute
Weft Densityminimum 0.01 picks/cm
24 picks/cm
Loom Efficiencyaccepts 1–100 %
88 %
Running Hoursminimum 0.01 hours
24 hours

Results

Fabric Produced
316.80
Fabric Per Hour
13.200
Effective Picks Per Minute
528.0
Metres Per 8-Hour Shift
105.60

Step by step

  1. 1Values used
  2. 2Loom production
  3. 3Fabric Produced= 316.80
  4. 4Fabric Per Hour= 13.200
  5. 5Effective Picks Per Minute= 528.0
  6. 6Metres Per 8-Hour Shift= 105.60

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why is loom efficiency below 100%?

Warp and weft stops, beam and quill changes, style changes, and mechanical faults. Air-jet looms on smooth yarn reach 90-95%; difficult yarns or wide fabric pull it to 80% or below.

Does loom speed alone determine productivity?

No — the standard comparison is weft insertion rate, loom speed times reed width. A wide loom at moderate rpm can out-produce a narrow fast one.

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