Planning warehouse space starts with how many pallets your stock fills and how many pallet positions they need. From that you can estimate floor area and see whether a warehouse or rack system is large enough.
Enter your stock and layout figures below.
Pallet and Warehouse Space Calculator
Enter your numbers to see the result.
Estimates for planning only. Results depend on the accuracy of the inputs and the assumptions of the standard formula.
The method
- Pallets = units / units per pallet, rounded up
- Floor positions = pallets / levels, rounded up
- Floor area = floor positions x area per position
- Utilization = pallets / pallet positions available
Area per position should include the aisle space your handling equipment needs, which depends on equipment type and layout. Real capacity is lower than the theoretical figure because of mixed pallets, partial pallets and the need to keep some positions free for putaway and picking, so plan for a utilization well below 100%.
Worked example
24,000 units, 480 units per pallet, 4 levels, 2.6 m² per position and 60 pallet positions available.
- Pallets = 24,000 / 480 = 50
- Floor positions = 50 / 4 = 12.5, rounded up to 13
- Floor area = 13 x 2.6 = 33.8 m²
- Utilization = 50 / 60 = 83.3%
Planning tips
High utilization limits flexibility and slows picking. Many operations plan for a working level below full capacity so there is room for inbound peaks. Check the weight rating of racks and floors as well as the space.
Repeat the calculation for each product group and add them up, since pallet patterns differ. Also check vertical clearance, because the usable number of levels depends on building height. See our warehouse guides and the fulfillment cost calculator.
Common questions
How many units fit on a pallet?
It depends on carton dimensions, the pallet size and the stacking pattern, and is limited by height and weight. Use your own pallet pattern, taken from receiving records or a physical count, rather than a generic figure, because small packing changes shift the answer noticeably.
What utilization should be planned for?
Plan for a working level below 100% so putaway and picking are not blocked. The right level depends on how fast stock moves, how varied it is and how large inbound peaks are. Slow, uniform stock tolerates higher utilization than fast, mixed stock.
Does the calculator include aisles?
Only through the area per position you enter. Use a value that includes your share of aisle space for the handling equipment in use, since narrower aisles lower the area per position but need more specialised trucks.
Why are pallets and floor positions rounded up?
A partly filled pallet or rack column still occupies a full position, so rounding down would understate the space you need. The rounding adds a little slack, which is why the floor area can exceed a simple division of units by capacity.
Can it be used for a whole warehouse?
Yes, if you run it for each product group and add the results. Different products have different pallet patterns, heights and weights, so one combined figure can hide a shortage in a particular group. Add space for staging, picking faces and aisles outside storage.