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Inventory Management Tool

Inventory Turnover Calculator
Know How Fast Your Inventory Is Moving

Enter cost of goods sold, beginning inventory, and ending inventory to calculate your inventory turnover ratio and days sales of inventory instantly.

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Inventory Management Tool

Inventory Turnover Calculator

What Is Inventory Turnover?

Inventory turnover is a financial ratio that measures how many times a business sells and replaces its inventory during a specific period -- typically a fiscal year or quarter. A higher turnover ratio means inventory is moving quickly, cash is not tied up in slow-moving stock, and the business is operating efficiently. A lower turnover ratio may indicate overstocking, weak sales, obsolete product, or pricing that is out of step with the market.

For product-based small businesses -- retailers, wholesalers, manufacturers, food service operations, and distributors -- inventory turnover is one of the most operationally important metrics to track. It directly impacts cash flow, storage costs, spoilage risk, and gross margin. A business that turns inventory four times a year has cash tied up in product for an average of 91 days. One that turns it twelve times has cash tied up for only 30 days -- a difference with major implications for liquidity and working capital.

Inventory Turnover Formula

Average Inventory = (Beginning Inventory + Ending Inventory) ÷ 2
Inventory Turnover = Cost of Goods Sold ÷ Average Inventory
Days Sales of Inventory (DSI) = 365 ÷ Inventory Turnover

Inventory Turnover Example

COGS: $500,000  |  Beginning Inventory: $90,000  |  Ending Inventory: $110,000
Average Inventory = ($90,000 + $110,000) ÷ 2 = $100,000
Inventory Turnover = $500,000 ÷ $100,000 = 5.0 times
Days Sales of Inventory = 365 ÷ 5.0 = 73 days

What Is a Good Inventory Turnover Ratio?

Inventory turnover benchmarks vary significantly by industry. Grocery and food service businesses typically turn inventory 15 to 30 times per year because product has a short shelf life. Retail clothing turns 4 to 6 times. Manufacturing companies often run 4 to 8 times. Auto dealers typically turn 6 to 12 times. Industrial distributors may turn only 3 to 4 times. The most useful comparison is your own trend over time -- and your turnover ratio compared to others in your specific industry, not a generic benchmark.

How to Improve Inventory Turnover

Inventory turnover improves through two levers: increasing the rate at which inventory is sold (better marketing, pricing, promotions, product selection) or decreasing the amount of inventory held (smaller order quantities, faster reorder cycles, elimination of slow-moving SKUs). For small businesses, the fastest wins are usually eliminating products that have been sitting for more than 90 days, tightening reorder points to reduce excess safety stock, and using sales data to align purchasing more closely with actual demand patterns rather than historical averages or vendor minimums.

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