Glossary
What is inventory turnover?
Inventory turnover measures how many times a business sells and replaces its inventory over a period, usually a year.
Definition
Turnover is the speed gauge for inventory. Divide cost of goods sold by average inventory value and you get the number of times the stock cycled in a year. A turnover of 6 means inventory turned over every two months on average. Higher turnover means less cash sitting on shelves; lower turnover means stock is aging.
What counts as good depends entirely on the business. A grocery distributor might turn 15 to 25 times a year. A specialty parts supplier holding slow-moving repair stock might run at 2 to 4 and be perfectly healthy, because the cost of a stockout on a critical part dwarfs the carrying cost. Comparing your number against an unrelated industry benchmark is a waste of a meeting.
The more useful move is to compute turnover per SKU or per category, not just for the whole business. The aggregate number hides the story: a few fast movers can mask a back aisle full of dead stock. Per-SKU turnover sorted ascending is a ready-made list of items to discount, return to the supplier, or stop reordering.
Formula
Inventory Turnover = Cost of Goods Sold / Average Inventory Value
Example
A bike shop has COGS of $480,000 for the year and average inventory of $120,000. Turnover = 480,000 / 120,000 = 4, so stock turns roughly every three months.
By Cameron Priest · Co-founder, Order3
Cameron co-founded TradeGecko, the inventory platform acquired by Intuit. He has spent more than a decade building software for the people who run physical stock.
Updated 2026-06-16
Where this lives in Order3