Safety Stock Calculator
Calculate the Right Inventory Buffer
Enter your demand pattern, lead time, and target service level to determine how much safety stock to carry. Balance stockout risk against inventory holding costs.
Input Parameters
units
units/day
days
Z-score: 1.65
SS = Z x σd x √L
Z (service level z-score)1.65
σd (demand std deviation)20 units/day
√L (square root of lead time)2.65 days
Safety Stock87.3 units
Results
Safety Stock
88
units at 95% service level
Avg Inventory
438
units
Days of Safety
0.9
days
Stockout Risk
5%
probability
Avg Cycle Stock
350
units
Lead Time Demand
700
units
Optimize Inventory
Let WorkCell Calculate Safety Stock for Every SKU.
WorkCell analyzes demand variability and lead times in real time - so your inventory buffers stay right-sized without manual spreadsheet work.