Facility Planning Calculators: Location, Layout, Space, Machines and Material Handling

Facility planning calculators are the tools a plant, warehouse, or engineering team uses to locate a site and arrange its floor so material flows with the least cost and space. They answer the practical questions behind a layout: where a new plant should sit relative to its demand, whether one arrangement of departments moves material less than another, how many machines or workstations a demand needs, how much floor area the equipment requires, how many pallets a warehouse can hold, and how many forklifts or AGVs the flow needs. Each one runs in your browser and shows the working behind the answer.

The center of gravity method finds the point that minimizes total weighted distance to a set of demand points. Each demand point has a coordinate and a weight, usually the volume shipped to or from it, and the method computes a weighted average of the coordinates. The result is the location that balances the pull of every market, so transport cost across all of them is as low as the geography allows. Planners treat it as a starting point and then adjust for roads, land price, labor, and zoning, but it anchors the decision in the actual flow of goods rather than a guess.

A load-distance score measures how much material a layout moves. For each pair of departments you multiply the load between them, in trips or units, by the distance between their locations, then sum across all pairs. A lower total means less movement, and less movement means lower handling cost and shorter throughput time. The score lets you compare two floor plans objectively instead of arguing about them, and it points to the fix: put the department pairs with the heaviest flow closest together. Material handling is often 20 to 50 percent of operating cost, so cutting the load-distance total goes straight to the bottom line.

The number of machines equals the total work the demand requires divided by the time one machine can supply. In practice you multiply demand by the cycle or standard time per unit to get the total processing time needed, then divide by the available time per machine over the same period, adjusted for efficiency and any scrap or rework. The result is usually a fraction, and you round up because a partial machine cannot exist. Doing this per operation shows where a line is short of capacity and where it has slack, which feeds directly into the space and layout plan.

The Guerchet method estimates the floor area a production area needs by adding three surfaces for each machine or workstation. The static surface is the footprint of the equipment itself. The gravitational surface is the area an operator and material occupy around it, found by multiplying the static surface by the number of sides in use. The evolution surface is the room needed for movement and access, found with a coefficient applied to the sum of the first two. Adding all three across every machine gives the total area, so a plan reserves enough room for equipment, people, and flow without guessing.

Fleet sizing divides the total handling time the operation needs by the time one truck can provide. First estimate the handling time each move takes and multiply by the number of moves per period to get total handling time. Then work out how much time one forklift or AGV can supply in that period after breaks, charging, and availability. Dividing the first by the second and rounding up gives the number of trucks. Sizing from the workload this way avoids paying for idle trucks while stopping loads from piling up at the docks and machines.

Warehouse storage capacity is the number of pallet positions a layout holds, which comes from the racking type, the number of bays and levels, the stack height, and the aisle width that serves them. Wider aisles let bigger trucks turn but cost floor area, so capacity is always a trade between access and density. Multiplying positions per bay by the number of bays gives the pallet count, and dividing the inventory to be held by that count shows whether the plan fits. The tool also reports the storage area used, so a warehouse plan matches both the pallets it must hold and the building it sits in.

Yes, every tool is free with no sign-up, and all calculation happens in your browser. The numbers you enter are never sent to a server, stored, or shared. Each tool also exports a clean PDF or CSV. These calculators are for education and planning; confirm any figure that informs a capital or safety decision with a qualified engineer and a detailed site study.