Safety stock calculator with two methods
Compare a maximum-usage buffer with a service-level estimate. Paste a one-column demand CSV to calculate average daily demand and demand variation from your own observations.
Safety stock calculation example in Excel
For the maximum-usage method, put maximum daily demand in B2, maximum lead time in B3, average daily demand in B4 and average lead time in B5. The Excel formula is =(B2*B3)-(B4*B5). With 35, 10, 20 and 7, the safety-stock estimate is 210 units. Add average lead-time demand to get a 350-unit reorder point.
- ✓Keep demand and lead time in matching daily units.
- ✓Use observed values from a stated period.
- ✓Treat the spreadsheet result as a planning input, not an automatic purchase instruction.
Use the result with ecommerce inventory signals
An ecommerce team can compare the buffer with available, reserved and inbound quantities before deciding whether to replenish. Promotions, supplier disruption, returns and channel reservations can make historic averages misleading, so record the assumptions beside each calculation.
- ✓Separate available stock from reserved stock.
- ✓Review supplier lead-time changes before reordering.
- ✓Retain a human approval step for purchase orders.
Continue from calculation to workflow
Use the result as an input to planning-not as a standalone system decision.
Need the calculation inside your operating workflow?
Codeblix can scope the records, approvals, reports and implementation around your process.
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