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THE FEUTEX TOOLKIT

Production Start Quantity with Scrap

Plan starts and material cost needed to deliver a good-unit target at an assumed yield.

Supply Chain workspace● Runs in your browser
01 Your input
02 Your result
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FormulaRequired starts = Math.ceil(v.good_target/(v.yield/100)) ; Expected scrap = Math.ceil(v.good_target/(v.yield/100))*(1-v.yield/100) ; Material budget = Math.ceil(v.good_target/(v.yield/100))*v.material
Sources and model references

Worked example

Inputs

Good target
1000 items
Yield
95 %
Material
8 currency/start

Expected results

Required starts
1053 items
Expected scrap
52.65 items
Material budget
8424 currency

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 your own assumptions using a consistent currency and period.
  2. Review the scenario outputs and compare alternative inputs.
  3. Check the stated model limits before using the result in an operating plan.

Try this example

{
  "good_target": 1000,
  "yield": 95,
  "material": 8
}

Accuracy and scope

Deterministic planning scenario; inputs are assumptions, not forecasts. Excludes taxes, financing, legal requirements and costs not explicitly entered. Source explains the underlying planning framework; this specific scenario arithmetic is original.

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.