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How to Calculate Warehouse Space and Storage Capacity

In warehouses and similar storage facilities, space stands out as the most valuable asset. Optimizing warehouse space usage enables businesses to significantly enhance their storage capacity. This increased capacity not only reduces transportation costs and other overheads but also improves staff access to products, thereby expediting order fulfillment and ensuring quicker delivery to customers. Given the paramount importance of space in a warehouse environment, it’s imperative for warehouse managers and business owners to meticulously assess their available space and its utilization. This article will delve into the methods for conducting such evaluations and enhancing the efficient utilization of storage space within your warehouse.

How to Calculate Warehouse Space and Storage Capacity

Calculating the Total Storage Capacity of Your Warehouse

To evaluate your warehouse storage space efficiency, start by calculating the total storage capacity of the building. A common mistake is to only measure the square footage of the entire facility without considering areas unsuitable for product storage. Therefore, additional steps are necessary to accurately determine the warehouse’s total storage capacity. Follow these four steps:

  • Determine the complete square footage of your warehouse. Let’s assume it’s 120,000 square feet.
  • Subtract the square footage utilized for non-storage purposes, such as office spaces, restrooms, loading zones, and any other areas where goods cannot be stored. For example, if this amounts to 30,000 square feet, your usable warehouse space becomes 90,000 square feet.
  • Find out the clear height of your building, which is the distance from the floor to the highest overhead object. This could be the distance from the floor to the facility’s roof or to the lowest-hanging overhead fixtures like lighting or equipment. The clear height determines the maximum height available for storing items.
  • Multiply the total square footage of usable space (90,000) by the clear height of your facility to determine the warehouse’s storage capacity in cubic feet. Suppose the clear height is 30 feet, then the warehouse’s total storage capacity equals 2,700,000 cubic feet.

Converting the warehouse’s total storage capacity into cubic feet allows for a more comprehensive assessment of space utilization. This conversion enables the calculation of warehouse storage utilization in cubic feet, providing valuable insights into space efficiency.

Are You Utilizing All of Your Warehouse Space?

Once you’ve determined the total storage capacity of your warehouse space, you can commence analyzing the efficiency of its utilization. This can be achieved through two steps: understanding how to calculate warehouse space utilization and subsequently assessing your specific usage patterns.

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1. Learn How to Calculate Warehouse Space Utilization

Determining your warehouse space utilization is crucial for ensuring efficient use of the available space in your facility. This metric indicates the percentage of your usable storage space that is currently being utilized. Interestingly, aiming for a perfect 100% utilization isn’t optimal; in fact, you should strive for a figure significantly lower than that. We’ll explain the rationale behind this after outlining the calculation process. Let’s consider a different scenario where the total storage capacity of the warehouse is 1,500,000 cubic feet. To assess the actual utilization of this space, follow these steps to calculate the inventory cube size of your facility:

  • Measure the dimensions of all your pallet racks.
  • Calculate the total vertical storage capacity of these racks.
  • Multiply the true capacity of each pallet rack in your warehouse by the total number of racks you have.

The resulting figure from these calculations represents the size of your warehouse’s storage cube. Let’s assume the value obtained after this calculation is 400,000. With a total storage space of 1,500,000 cubic feet, this indicates a storage utilization percentage of 26.67%, which is considered quite satisfactory.

2. Start Evaluating Your Warehouse Space Utilization

You might be wondering why a utilization percentage of 25% is considered favorable and if it should be closer to maximum capacity. The straightforward answer is no. Instead, having a storage utilization exceeding 27% or falling below 22% would indicate potential issues in the layout and design of your warehouse. A utilization exceeding 27% might suggest challenges for your staff in maneuvering around the warehouse to pick and restock items, leading to increased labor costs. Conversely, a storage cube size comprising less than 22% of your facility’s total storage capacity could indicate wasted storage potential due to inefficiencies in the warehouse layout. For instance, let’s consider a warehouse with 1,800,000 cubic feet of usable storage space. An ideal storage cube size would fall between 400,000 and 500,000 cubic feet. Opting for the midpoint of this range — 450,000 cubic feet — sets the target for optimal warehouse storage efficiency. This figure naturally varies for each warehouse. For the sake of this illustration, let’s assume the warehouse has a storage cube size of 450,000 cubic feet. Warehouse managers and designers can then plan the facility layout with optimization and efficiency in mind, while you can calculate the extent to which you’re utilizing that storage cube size. For example, if you’re storing 320,000 units of product, you would be utilizing 71.11% of the available optimal storage space.

FAQ’s

Why is space considered the most valuable asset in warehouses and storage facilities?

Space is deemed the most valuable asset in warehouses due to its direct impact on storage capacity and operational efficiency. Optimizing space utilization allows businesses to store more products, reduce transportation costs, and improve staff accessibility, leading to faster order fulfillment and enhanced customer satisfaction.

What steps are involved in calculating the total storage capacity of a warehouse?

To calculate the total storage capacity of a warehouse, one must:

  • Determine the complete square footage of the warehouse.
  • Subtract the square footage utilized for non-storage purposes.
  • Find out the clear height of the building.
  • Multiply the total usable space by the clear height to determine the warehouse’s storage capacity in cubic feet.

Why is it important to calculate warehouse space utilization?

Calculating warehouse space utilization helps businesses assess the efficiency of their storage space usage. It indicates the percentage of usable storage space currently being utilized, allowing for better resource allocation and optimization of storage facilities.

What is the significance of the storage cube size in warehouse space utilization?

The storage cube size represents the volume of space utilized within the warehouse. A proper balance between the storage cube size and the total storage capacity ensures optimal space utilization. Deviations from the ideal range can signal inefficiencies in warehouse layout and design.

How should warehouse managers interpret storage utilization percentages?

Warehouse managers should aim for storage utilization percentages that strike a balance between maximizing storage capacity and ensuring operational efficiency. Utilization exceeding 27% or falling below 22% may indicate potential issues requiring attention in warehouse layout and design.

Conclusion

Maximizing warehouse space utilization is vital for enhancing storage capacity and operational efficiency. By accurately assessing storage capacity and understanding utilization metrics, businesses can identify opportunities for improvement. Maintaining an optimal storage cube size streamlines operations, leading to cost savings and improved customer satisfaction. With careful planning and regular evaluations, warehouse managers can ensure efficient space utilization to meet market demands effectively.