Calculator for selective pallet racking, drive-in systems, and pallet flow configurations is a crucial online utility for warehouse designers in the US, operations managers in the UK, and logistics consultants in AU, aiming to optimize storage for specific inventory characteristics and throughput requirements. This versatile Pallet Racking Calculator enables users to compare and contrast the benefits of different warehouse rack types. Selective pallet racking, the most widely used system globally (including CA and EU), offers 100% accessibility to each pallet, making it ideal for operations with a high number of SKUs and relatively low volume per SKU, such as in retail distribution, parts depots, or general manufacturing storage. The calculator helps determine beam lengths, upright capacities, and aisle widths for standard forklifts or narrow aisle reach trucks. For high-density needs with limited SKUs, such as bulk storage of seasonal goods or raw materials in DE or JP, drive-in racking (LIFO) is a common choice. The calculator assists in designing lane depths, heights, and ensuring structural stability, considering the operational pattern of forklifts driving directly into the racking structure. Conversely, drive-thru racking, offering FIFO access, is suitable for similar high-density applications but where stock rotation is more critical; the calculator helps plan the dual entry/exit points. Pallet flow racking (also known as gravity flow) is perfect for FIFO operations requiring high throughput and strict inventory rotation, such as in food and beverage industries (especially for dairy or produce in FR and NZ) or pharmaceutical dispatch areas. The calculator factors in the angle of incline, roller specifications, and braking systems needed for controlled pallet movement. Push-back racking provides a LIFO, high-density solution that offers more selectivity than drive-in, suitable for buffering stock in manufacturing or for wholesale distribution in SG; the calculator helps determine the number of pallets deep (typically 2 to 6) and the capacity of the wheeled carts or roller system. For extremely long or awkwardly shaped items like timber, steel profiles, or furniture, common in construction or specialized manufacturing in BE and CH, cantilever racking is the go-to solution. The calculator will help specify arm length, arm capacity, and column strength. Understanding these specific use cases and applying the calculator to model them ensures optimal space utilization, efficient material flow, and safe load handling across diverse warehouse types, from small business storage units to massive automated logistics hubs. It facilitates informed decisions, preventing costly mistakes in rack selection and layout design.