learn.howToCalculate
learn.whatIsHeading
Calculates buffer inventory to prevent stockouts due to demand uncertainty or supply delays. Balances carrying costs against stockout costs.
Công thức
Calculate: safety stock = z × std dev × √(lead time)
Hướng dẫn từng bước
- 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)
Ví dụ có lời giải
đầu vào
10/day, 5day lead
Kết quả
50 units
Lỗi thường gặp cần tránh
- ✕Over-stocking to prevent all possible stockouts
- ✕Not accounting for actual demand patterns
Câu hỏi thường gặp
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.
Sẵn sàng để tính toán? Dùng thử Máy tính Safety Stock miễn phí
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