免费前置时间需求计算器
计算供应前置时间内的预期需求量，优化采购计划和库存管理。
Lead Time Demand
490
Lead Time Demand vs Lead Time (days)
公式
How to Calculate Lead Time Demand
Formula
Lead Time Demand = Average Daily Demand x Lead Time (days)
Lead time demand is the inventory you will consume between placing an order and receiving it. If you sell 35 units per day and your supplier needs 14 days to deliver, you must have at least 490 units available when you place the order (plus safety stock). This calculation is the foundation of reorder point planning.
计算示例
A product sells 35 units per day on average, and the supplier lead time is 14 days.
- 01Lead Time Demand = 35 x 14 = 490 units
- 02Weekly Demand = 35 x 7 = 245 units
- 03You need at least 490 units on hand when placing an order to last until delivery.
常见问题
What if demand fluctuates?
If demand is variable, use the average daily demand for the lead time demand calculation, then add safety stock to buffer against above-average demand days. The more volatile your demand, the more safety stock you need.
Should I account for weekends in lead time?
It depends on your operation. If you sell 7 days a week, use calendar days. If you only sell on business days, use business days for both demand and lead time. Be consistent.
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