How to Calculate Safety Stock
What is Safety Stock?
Safety Stock Calculator helps logistics and supply chain professionals optimize operations and reduce costs.
Formula
Safety Stock = Z-score × Lead Time StdDev × Avg Daily Usage
Step-by-Step Guide
- 1Set service level (Z-score), measure demand variability
- 2Apply the formula with your specific values
- 3Use the result to optimize operations or costs
Worked Examples
Input
Z=1.65 (95%), σ=2 days, 10 units/day
Result
Safety Stock = 1.65 × 2 × 10 = 33 units
Common Mistakes to Avoid
- ✕Using incorrect units or dimensions in the calculation
- ✕Ignoring surcharges and accessorial fees
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