Grain Milling, Dry Bulk Food & Feed Handling worked example

Mill Throughput at 63% mill operating efficiency: a worked example

This worked example runs the mill throughput numbers for a tougher week than the baseline: 63% mill operating efficiency instead of the typical 88%. Calculate effective mill throughput for wheat, corn, soy, flour, meal, or feed production using milled output, runtime, and realistic operating efficiency.

The inputs for this scenario

  • Finished milled output: 120 tons (held at the documented default)
  • Productive mill runtime: 8 hr (held at the documented default)
  • Mill operating efficiency: 63 % (the input this scenario stresses; the baseline uses 88)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw mill throughput = finished milled output รท productive mill runtime.
  • Effective throughput works out to 9.45 tons / hr at these inputs, and this is the headline figure for the scenario.
  • Raw mill throughput works out to 15 tons / hr at these inputs.
  • Efficiency works out to 63 % at these inputs.
  • Runtime works out to 8 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where mill operating efficiency sits at 88% and the headline result is 13.2 tons / hr, this scenario comes in 28.41% below the baseline at 9.45 tons / hr.
  • Use it when validating a production schedule, benchmarking one milling line against another, or quantifying the gap between nameplate and real-world capacity. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Effective throughput: 9.45 tons / hr (headline result)
  • Raw mill throughput: 15 tons / hr
  • Efficiency: 63 %
  • Runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Mill Throughput calculator, set mill operating efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.