wareliumtoolsEstimate a reorder trigger, safety stock and pack-rounded order quantity from your demand and lead times.
Use the same item and daily units throughout.
Worst-case buffer method using your estimates. Not a statistical service-level forecast; no stock records are changed.
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Safety stock = max(0, maximum daily demand × longest lead time − average daily demand × usual lead time). Reorder point adds the expected lead-time demand to that buffer, rounded up to whole pieces.
If position is at or below the reorder point, order up to average demand × (usual lead time + review period) + safety stock. The order rounds up to your pack multiple. Above the trigger, the suggested order is zero.
No. The result depends on your demand and lead-time estimates. Seasonality, promotions, expiry, supplier minimums and cash constraints are outside this simple model. Review against your actual history.
It includes incoming replenishment and outstanding demand, reducing duplicate orders. Only count incoming quantities you expect to receive in the relevant planning window.
Illustrative inputs and outputs to help you check your own task.
This uses a worst-case demand and lead-time buffer. It is not a forecast or a supplier order.
Check that on-hand, on-order and backorder quantities all use the same unit before comparing them.
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