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Retail & Warehouse Math Center

Stock, shelves, cartons, turnover, demand and basic ordering arithmetic. 20 tools with purposes, formulas and worked examples.

Simple mode uses starting defaults for extra scenario controls. Advanced exposes those controls where available. Change an entry, then press Calculate.

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Formula, calculation steps & example

All 20 tools: purposes and formulas

Stock balance after receipts and sales — Use the labeled measurements to calculate stock balance after receipts and sales.
A + B + … (A, B, C refer to the labeled entries)
Inventory days at demand rate — Use the labeled measurements to calculate inventory days at demand rate.
A ÷ B (A, B, C refer to the labeled entries)
Demand during lead time — Use the labeled measurements to calculate demand during lead time.
A × B (A, B, C refer to the labeled entries)
Entered reorder point — Use the labeled measurements to calculate entered reorder point.
A + B + … (A, B, C refer to the labeled entries)
Units below target stock — Use the labeled measurements to calculate units below target stock.
A − B (A, B, C refer to the labeled entries)
Whole cartons for units — Use the labeled measurements to calculate whole cartons for units.
ceiling(A ÷ B) (A, B, C refer to the labeled entries)
External carton volume — Use the labeled measurements to calculate external carton volume.
A × B × C (A, B, C refer to the labeled entries)
Carton lot volume — Use the labeled measurements to calculate carton lot volume.
A × B (A, B, C refer to the labeled entries)
Items along shelf width — Use the labeled measurements to calculate items along shelf width.
floor(A ÷ B) (A, B, C refer to the labeled entries)
Shelf surface area — Use the labeled measurements to calculate shelf surface area.
A × B (A, B, C refer to the labeled entries)
Whole pallets by cartons — Use the labeled measurements to calculate whole pallets by cartons.
ceiling(A ÷ B) (A, B, C refer to the labeled entries)
Order picking time — Use the labeled measurements to calculate order picking time.
A ÷ B (A, B, C refer to the labeled entries)
Picking throughput — Use the labeled measurements to calculate picking throughput.
A ÷ B (A, B, C refer to the labeled entries)
Cost-basis stock turnover — Use the labeled measurements to calculate cost-basis stock turnover.
A ÷ B (A, B, C refer to the labeled entries)
Inventory shrinkage share — Use the labeled measurements to calculate inventory shrinkage share.
A ÷ B × 100 (A, B, C refer to the labeled entries)
Sell-through percentage — Use the labeled measurements to calculate sell-through percentage.
A ÷ B × 100 (A, B, C refer to the labeled entries)
Markdown sale price — Use the labeled measurements to calculate markdown sale price.
A × (1 − B/100) (A, B, C refer to the labeled entries)
Retail gross revenue — Use the labeled measurements to calculate retail gross revenue.
A × B (A, B, C refer to the labeled entries)
Stock purchase cost — Use the labeled measurements to calculate stock purchase cost.
A × B (A, B, C refer to the labeled entries)
Volume per stored item — Use the labeled measurements to calculate volume per stored item.
A ÷ B (A, B, C refer to the labeled entries)

Definitions and source references

Unit definitions and selected model references:

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