Safety Stock Calculator

Currency (Informational): USD ($) EUR (€) GBP (£)

Safety stock is calculated in units. Currency is informational if you associate cost with these units.

Input Parameters:

Swipe or use the scrollbar below to navigate through input categories.

Demand Data

Average Daily Demand (Units)

Std. Deviation of Daily Demand (Units)

Lead Time Data

Average Lead Time (Days)

Std. Deviation of Lead Time (Days) Enter 0 if lead time is constant.

Service Level & Policy

Desired Service Level (%) 50% (Z=0.00) 80% (Z=0.84) 85% (Z=1.04) 90% (Z=1.28) 95% (Z=1.645) 97% (Z=1.88) 98% (Z=2.05) 99% (Z=2.33) 99.9% (Z=3.09) Probability of not stocking out during lead time.

Tool Actions & Information

This tool calculates Safety Stock and related inventory metrics based on demand and lead time variability.

Calculation Results

Std. Deviation of Lead Time Demand (σLTD): - Units

Safety Stock (SS): - Units

For Context (Related Metrics):

Average Lead Time Demand (LTD): - Units

Reorder Point (ROP): - Units

Disclaimer: These calculations are based on standard inventory formulas and provided assumptions. Real-world inventory management may require more complex models.