Inventory Management 101 – Min Max Inventory Calculation (2024)

Inventory Management 101 – Min Max Inventory Calculation (1)

Inventory Management 101 – Min Max Inventory Calculation

The Min/Max inventory ordering method is the basic method of inventory control.There are two lines

a.Min – Minimum amount of inventory is the value represents a stock level that triggers a reorder process

b.Max- Maximum value represents a the target stock level, will not trigger to ordering activities.

Table 1

Inventory Management 101 – Min Max Inventory Calculation (2)

Table 1 illustrate the formula for calculation and analysis. This example includes one week of safety stock

·Reorder quantity. The Reorder Quantity

·Reorder decision. Either to order or not to order

·Min value. The level which will trigger the reordering process

·Max value. The reorder quantity.

·Safety Stock. The level of safety stock

1.Daily Run rate: Average daily run rate base on either weekly working days or calendar days

2.Safety stock: Daily run rate *lead time (=F2*G2)

3.Min: (Daily Run Rate X Lead time )+Safety Stock ((F2*G2)+H2)

4.Max: 2 cycles of Safety Stock (Daily Run Rate X Lead time)*2. (=H2*2)

5.Reorder Quantity: Reorder quantity with Safety Stock (=H2+I2)

1.Reorder Analysis: If Reorder quantity is more than Balance Quantity plus Safety Stock, the decision is to order. As the inventory on hand will not be sufficient to cover the daily run rate for the duration of lead time.

=IF(K2>(E2+H2),"order","enough")

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Inventory Management 101 – Min Max Inventory Calculation (2024)

FAQs

How do you calculate inventory min max? ›

Min/Max Inventory Formula:
  1. Lead Time in Days:
  2. Safety Stock Percentage:
  3. Min/Max Inventory = [(Projected Usage Rate x Lead Time in Days) / Desired Level of Customer Service] – Safety Stock Percentage.
Nov 20, 2023

What is the formula for calculating the maximum inventory level? ›

Calculating maximum inventory levels

To calculate maximum inventory levels, use the following formula: maximum inventory levels = reorder point + reorder quantity – [minimum consumption × minimum lead time]. Let's go back to the t-shirt example.

How do you calculate how much inventory you need? ›

The formula looks like this: Maximum lead time x maximum daily sales – average lead time x average daily sales. The solution to the formula gives you a nominal recommendation for the level of safety stock to carry.

How do you calculate inventory management? ›

Days sales of inventory (DSI)

For example, if you have 12,000 units in your inventory with $37,000 in COGS, the calculation would look like this: 12,000 / 37,000 = 0.32. Multiplying this figure by 365 indicates that it will take you about 118 days to sell your inventory.

What is maximum inventory quantity? ›

The maximum stock level is the largest number of goods a company can store to provide its customers with service at the lowest possible cost. It's vital to keep inventory control in line with demand.

What is a min max report? ›

Use the Min-Max Planning Report to show planning information for all items, or items with on-hand balances either below or above their assigned minimum or maximum on-hand quantities.

What is a good inventory turnover ratio? ›

What Is a Good Inventory Turnover Ratio? A good inventory turnover ratio is between 5 and 10 for most industries, which indicates that you sell and restock your inventory every 1-2 months. This ratio strikes a good balance between having enough inventory on hand and not having to reorder too frequently.

What is the formula for inventory management cost? ›

The inventory cost formula consists of beginning inventory value, ending inventory value, and purchase costs over a set period of time. More succinctly, it looks like: inventory cost = [beginning inventory + inventory purchases] - ending inventory.

What are the three methods of calculating inventory? ›

What are the different inventory valuation methods? There are three methods for inventory valuation: FIFO (First In, First Out), LIFO (Last In, First Out), and WAC (Weighted Average Cost).

What is the formula for average inventory size? ›

Share Blog: The average inventory formula is: Average inventory = (Beginning inventory + Ending inventory) / 2. However there's more to it than simply knowing the formula. Calculating average inventory is an important part of your overall inventory strategy.

What is minimum quantity in inventory? ›

MOQ stands for Minimum Order Quantity and is the smallest number of items a supplier will accept for an order. EOQ is based on the cost of ordering and holding, while MOQ is based on the supplier's requirements.

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