📦efficiency

Inventory Turnover

Inventory Turnover = Cost of Goods Sold / Average Inventory

Inventory turnover measures how many times a company sells and replaces its inventory during a period. Higher turnover indicates efficient inventory management and strong sales, while low turnover may indicate overstocking or weak demand.

Variables

COGS=Cost of Goods Sold

Total cost of inventory sold during the period

AI=Average Inventory

(Beginning Inventory + Ending Inventory) / 2

Example Calculation

Scenario

Company STU has COGS of $800,000 and average inventory of $100,000.

Given Data

COGS:$800,000
Average Inventory:$100,000

Calculation

Inventory Turnover = $800,000 / $100,000

Result

8 times

Interpretation

The company sold and replaced its inventory 8 times during the year. This means inventory sits for about 46 days on average (365/8) before being sold.

When to Use This Formula

  • Evaluating inventory management efficiency
  • Identifying slow-moving inventory
  • Comparing operational efficiency
  • Working capital analysis

Common Mistakes

  • Using revenue instead of COGS
  • Not using average inventory
  • Comparing across industries with different business models

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FAQs

Common questions about this formula

It varies by industry. Grocery stores might have turnover of 12-15x (monthly turns), while jewelry stores might be 1-2x annually. Higher is generally better within an industry, but too high might mean stockouts.

COGS is used because inventory is recorded at cost, not selling price. Using revenue would inflate the ratio since revenue includes the profit margin. COGS provides an apples-to-apples comparison.

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