Finishing worked example

Powder Inventory Days with powder on hand of 3,000 lb: a worked example

This scenario runs the powder inventory days calculation on the strong side: powder on hand of 3,000 lb, with every other input held at its documented default. Use this calculator for practical powder coating or surface finishing planning, quoting, troubleshooting, or line setup.

The inputs for this scenario

  • Powder on hand: 3,000 lb (raised for this scenario; the documented default is 1,200)
  • Average powder usage: 85 lb / day (unchanged)
  • Safety factor: 1.1 x (unchanged)

Working through the calculation

  • Applying the documented formula (Days of supply = inventory on hand รท daily usage) to the inputs above produces each figure below.
  • At this operating point the engine returns 32.09 days for protected days of supply, the number this scenario is built around.
  • At this operating point the engine returns 35.29 days for unprotected days.
  • At this operating point the engine returns 3,000 pieces for inventory.
  • At this operating point the engine returns 85 pieces / day for daily usage.

How this compares with the baseline

  • Against the tool's baseline example, where powder on hand sits at 1,200 lb and the headline result is 12.83 days, this scenario comes in 150% above the baseline at 32.09 days.
  • Use it during reorder planning to decide when to trigger a purchase order, especially for long-lead custom colors. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Protected days of supply: 32.09 days (headline result)
  • Unprotected days: 35.29 days
  • Inventory: 3,000 pieces
  • Daily usage: 85 pieces / day

Run it with your numbers

  • Every input above is editable in the live Powder Inventory Days calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.