How do you calculate minimum level of inventory?

To calculate the minimum level of inventory, first determine the average daily usage of the inventory item and the lead time required for replenishment. Multiply the average daily usage by the lead time to find the minimum inventory level needed to meet demand during the restocking period. Additionally, consider safety stock to account for variability in demand or supply delays. The formula can be summarized as: Minimum Inventory Level = (Average Daily Usage x Lead Time) + Safety Stock.