如何计算Safety Stock
learn.whatIsHeading
Calculates buffer inventory to prevent stockouts due to demand uncertainty or supply delays. Balances carrying costs against stockout costs.
公式
Calculate: safety stock = z × std dev × √(lead time)
分步指南
- 1Determine demand variability (standard deviation)
- 2Set service level (95%, 99%, etc.)
- 3Find z-score for service level
- 4Calculate: safety stock = z × std dev × √(lead time)
例题解析
输入
10/day, 5day lead
结果
50 units
常见错误注意事项
- ✕Over-stocking to prevent all possible stockouts
- ✕Not accounting for actual demand patterns
常见问题
How much safety stock should I hold?
Depends on variability and service level; 95% service level typical, sometimes 99% for critical items.
What's the cost of stockouts?
Lost sales, customer dissatisfaction, emergency expedited shipping, and market share loss.
准备好计算了吗？尝试免费的 Safety Stock 计算器
自己尝试一下 →