Weighing, Dosing & Loss-in-Weight Feeding worked example

Batch Tolerance Window with measured batch weight of 63 kg: a worked example

Suppose measured batch weight falls to 63 kg. This page works the full calculation at that level so you can see exactly which result moves and by how much. Batch Tolerance Window expresses how far a completed batch deviates from its nominal target weight as a percentage of a tolerance basis, so you can see at a glance whether the batch sits inside its acceptance band.

The inputs for this scenario

  • Measured batch weight: 63 kg (the input this scenario stresses; the baseline uses 125)
  • Nominal batch target: 100 kg (held at the documented default)
  • Tolerance basis weight: 100 kg (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Batch Tolerance Window margin = available value - required value.
  • Margin works out to -37 % at these inputs, and this is the headline figure for the scenario.
  • Absolute margin works out to -37 value at these inputs.
  • Available amount works out to 63 value at these inputs.
  • Required amount works out to 100 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where measured batch weight sits at 125 kg and the headline result is 25 %, this scenario comes in 248% below the baseline at -37 %.
  • It computes the deviation between the measured batch weight and the nominal target, then expresses that deviation as a percentage of a tolerance basis weight. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Margin: -37 % (headline result)
  • Absolute margin: -37 value
  • Available amount: 63 value
  • Required amount: 100 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Batch Tolerance Window calculator, set measured batch weight to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.