KPIOperations & Supply Chain

Inventory Turnover Rate

Number of times inventory is sold and replaced in a period

What is Inventory Turnover Rate?

Inventory turnover rate is the number of times a business sells and replaces its stock in a period. It shows how quickly inventory turns into sales.

Fast turnover means less cash tied up in stock and lower risk of stock becoming obsolete, while very slow turnover suggests overstock.

How this KPI is measured

Function
Operations & Supply Chain
Sub-function
Inventory Management
Industry
All Industries
Type
Lagging
Impact
Efficiency
Unit
x
Measurement frequency
Monthly / Quarterly
Formula
Cost of goods sold / Average inventory value

How to calculate it

Divide the cost of goods sold by the average inventory value.

For example, if cost of goods sold was 12,000,000 and average inventory was 3,000,000, turnover is 4 times a year.

Use the average of opening and closing inventory, and compare with similar businesses, since typical turnover varies widely by industry.

Where it is used

  • Managing working capital

    Release cash from stock.

  • Judging buying accuracy

    Match stock to demand.

  • Comparing categories

    Find slow-moving lines.

How to improve it

Tips and common mistakes

  • Too high a turnover can mean stock-outs and lost sales.
  • Compare with your own industry.
  • Use cost, not sales, in the calculation.

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