Inventory Turnover Calculator

A good inventory turnover ratio depends heavily on your industry. For fast-moving consumer goods (FMCG) and grocery retail, world-class is 12–20x per year. For general retail, 6–12x is strong. For manufacturing, 4–8x is typically world-class. For automotive parts or industrial distributors, 3–6x can be acceptable. The key benchmark is whether your turnover is improving year-over-year. Below 3x in most industries signals excess inventory, obsolescence risk, and tied-up working capital.

Days Sales of Inventory (DSI) = (Average Inventory ÷ Cost of Goods Sold) × 365. DSI tells you how many days it takes to sell through your average inventory level. A DSI of 30 means you turn your inventory every 30 days. DSI is the inverse of inventory turnover expressed in days, and is also called Days Inventory Outstanding (DIO). World-class DSI for retail is under 30 days; for manufacturing it is typically under 60 days.

To improve inventory turnover: (1) Identify slow-moving and dead stock SKUs using ABC-XYZ analysis and liquidate or discount them; (2) Improve demand forecasting accuracy to reduce over-buying; (3) Negotiate shorter lead times with suppliers to reduce safety stock requirements; (4) Implement vendor-managed inventory (VMI) for high-velocity items; (5) Review reorder points and quantities — many companies carry 2–3x more safety stock than needed; (6) Run promotions on excess stock before it becomes dead inventory; (7) Use AI-powered demand planning to reduce forecast error by 30–50%.