Free Warehouse Space Calculator
Usable storage area & volume
Enter your warehouse dimensions, aisle percentage, and staging area to calculate net usable storage area. Add shelf height and levels to get total storage volume. Supports metres and feet.
Warehouse Dimensions
Typical: 25–35%
Typical: 10–20%
Storage Volume (optional)
Total Area = Length × Width
Usable Area = Total Area × (1 − Aisle%)
Storage Area = Usable Area × (1 − Picking/Staging%)
Storage Volume = Storage Area × Shelf Height × Shelf Levels
What Is a Warehouse Space Calculator?
A warehouse space calculator helps you determine how much of your total floor area is actually available for storing products — after accounting for aisles, picking areas, staging zones, and other non-storage uses. Knowing your true net storage area lets you plan racking layouts, assess capacity, calculate cost per storage unit, and make informed decisions about whether your current warehouse can support business growth.
How to Calculate Warehouse Storage Space
Step 1 — Enter Warehouse Dimensions
Enter the internal length and width of your warehouse floor in metres or feet. Toggle the unit selector to switch between metric and imperial.
Step 2 — Set Aisle and Staging Percentages
Aisles typically take up 25–35% of floor area. Picking, packing, and staging zones account for another 10–20%. Adjust these defaults to match your actual warehouse layout.
Step 3 — Optionally Add Shelf Height and Levels
Enter shelf height and the number of shelf levels to calculate total usable storage volume — useful for capacity planning and comparing racking configurations.
Who Uses This Warehouse Space Calculator?
Warehouse Managers
Quickly calculate net usable storage area when planning layout changes, new racking, or expansions.
Logistics Planners
Compare different warehouse layouts, aisle widths, and racking configurations to maximise storage density.
Business Owners
Determine whether your current warehouse has enough capacity for planned growth or whether you need a larger facility.
Property & Facilities Teams
Estimate storage area and volume when evaluating new warehouse properties or calculating rental cost per usable m².
Frequently Asked Questions
How is usable warehouse storage area calculated?
Usable Area = Total Floor Area × (1 − Aisle%). Net Storage Area = Usable Area × (1 − Picking/Staging%). For example, a 1,500 m² warehouse with 30% aisles and 15% staging has a net storage area of 1,500 × 0.70 × 0.85 = 892.5 m².
What percentage of warehouse space is typically used for aisles?
Aisle space typically accounts for 25–35% of total floor area, depending on the equipment used (forklifts need wider aisles than hand pallet trucks) and racking layout (narrow-aisle, wide-aisle, or drive-in).
How much space should I allocate for receiving and dispatch?
Picking, packing, receiving, and dispatch areas typically take 10–20% of usable floor area. For high-throughput operations with a large number of daily orders, this can be higher.
How is storage volume calculated?
Storage Volume = Net Storage Area × Shelf Height × Number of Shelf Levels. For example, 500 m² of storage area with 5 m shelf height and 4 levels = 500 × 5 × 4 = 10,000 m³.
Can I use this calculator for feet instead of metres?
Yes. Toggle the unit selector at the top of the calculator to switch between metres and feet. All values are entered in your selected unit and results are shown in both units for reference.
Is this warehouse space calculator free?
Yes, completely free with no account or login required.