Planning worked example

Reorder Point with daily demand of 360 units / day: a worked example

What does the result look like when daily demand reaches 360 units / day? The full calculation is worked below with real intermediate numbers. Use to decide when an item should be replenished before stockout risk increases.

The inputs for this scenario

  • Daily demand: 360 units / day (raised for this scenario; the documented default is 145)
  • Lead time: 9 days (unchanged)
  • Safety stock: 420 units (unchanged)
  • Current inventory: 2,100 units (unchanged)

Working through the calculation

  • Applying the documented formula (Lead-time demand = daily demand × lead time) to the inputs above produces each figure below.
  • At this operating point the engine returns 3,660 units for reorder point, the number this scenario is built around.
  • At this operating point the engine returns 3,240 units for lead-time demand.
  • At this operating point the engine returns -1,560 units for inventory gap.
  • At this operating point the engine returns 0 days for days until reorder.

How this compares with the baseline

  • Against the tool's baseline example, where daily demand sits at 145 units / day and the headline result is 1,725 units, this scenario comes in 112% above the baseline at 3,660 units.
  • A figure at this level is achievable when daily demand is genuinely sustained, not just peaked for a shift. It assumes constant daily demand and a fixed lead time; if either varies significantly, the fixed safety stock here may not give the service level you need.

Results at a glance

  • Reorder point: 3,660 units (headline result)
  • Lead-time demand: 3,240 units
  • Inventory gap: -1,560 units
  • Days until reorder: 0 days

Run it with your numbers

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

Last reviewed 2026-05-12.