WMS, Warehouse Labor & Fulfillment worked example

Picking Zone Balance at 65% pick equipment and labor uptime: a worked example

This worked example runs the picking zone balance numbers for a tougher week than the baseline: 65% pick equipment and labor uptime instead of the typical 90%. Estimate picking zone balance for wms, warehouse labor and fulfillment using production-ready inputs so teams can confirm whether capacity can cover demand before committing the schedule.

The inputs for this scenario

  • Lines picked per zone cycle: 4 units / cycle (held at the documented default)
  • Available pick cycles per zone in the shift: 480 cycles (held at the documented default)
  • Pick equipment and labor uptime: 65 % (the input this scenario stresses; the baseline uses 90)
  • First-pass pick accuracy: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross picking zone balance capacity = picking zone balance output per cycle × available picking zone balance cycles.
  • Good picking zone balance capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross picking zone balance capacity works out to 1,920 units at these inputs.
  • Picking zone balance downtime loss works out to 672 units at these inputs.
  • Picking zone balance yield loss works out to 37.44 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where pick equipment and labor uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 27.78% below the baseline at 1,211 units.
  • Use it when balancing labor across pick zones, sizing a wave, or diagnosing why one zone consistently falls behind the pack line. 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

  • Good picking zone balance capacity: 1,211 units (headline result)
  • Gross picking zone balance capacity: 1,920 units
  • Picking zone balance downtime loss: 672 units
  • Picking zone balance yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Picking Zone Balance calculator, set pick equipment and labor uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.