Warehouse Utilisation Calculator

The optimal warehouse utilisation rate is between 85% and 92% of usable storage capacity. Below 85% suggests underused space and potentially high cost-per-pallet-position. Above 92% creates operational problems: pickers cannot move efficiently, replenishment becomes blocked, and put-away slows significantly because there are no obvious empty locations. Running at 95%+ consistently is a warning sign that you need either more space or better inventory management to reduce stock levels.

To improve warehouse space utilisation: (1) Conduct a slotting review — relocate fast-moving SKUs to the most accessible positions and move slow-movers to higher levels; (2) Review racking configuration — adding mezzanine levels or converting to narrower aisle racking can increase capacity by 30–50%; (3) Reduce excess inventory — identify slow-moving and dead stock and liquidate or return to supplier; (4) Implement warehouse management system (WMS) directed put-away to fill locations systematically; (5) Review pallet heights and weight limits — many warehouses underutilise vertical space because of inconsistent stacking practices; (6) Consider goods-to-person automation for picking to reclaim floor space currently used for pick aisles.

When warehouse utilisation exceeds 95%, operational performance degrades rapidly. Pickers spend significantly more time searching for available locations. Put-away productivity drops as forklift operators cannot find open slots and must wait or double-handle pallets. Stocktake accuracy deteriorates because items are stored in non-standard locations. Safety incidents increase due to congestion in aisles and staging areas. Inbound receiving slows because floor staging areas become blocked. Many operations see a 20–30% drop in labour productivity when consistently running above 95% utilisation.