Safety stock calculator
Keep a buffer. Not a mountain.
Safety stock absorbs the gap between expected demand and reality. Use the simple method when you know observed peaks, or the statistical method when you have a demand series.
Formula
The calculation used
Simple: (max daily usage × max lead time) − (average daily usage × average lead time). Statistical: z × daily demand standard deviation × √lead time.
Formula source: QuickBooks, reorder point and safety stockLimit
A calculation is still a model
The result depends entirely on your inputs. It makes a decision explicit; it does not predict a late supplier, a surprise promotion or a week that suddenly decides to be special.
Invumi
Calculate once, then track the real movements.
Invumi keeps quantities, consumption, thresholds, suppliers and forecasts in the same operational flow.
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