Inventory Turnover Calculator

Use this calculator to estimate inventory turnover based on cost of goods sold and average inventory.

What this calculator does

The inventory turnover calculator shows how efficiently inventory is sold and replaced over a period.

It is useful for:

• stock management
• retail reporting
• supply chain planning
• cash flow analysis

Inventory Turnover Formula

Inventory Turnover = Cost of Goods Sold ÷ Average Inventory

Where:

• Cost of Goods Sold = direct cost of items sold during the period
• Average Inventory = average stock held during the same period
• Inventory Turnover = how many times inventory is sold and replaced

Example calculation

If:

• Cost of goods sold = 120000
• Average inventory = 30000

Then:

• Inventory turnover = 120000 ÷ 30000
• Inventory turnover = 4

What is inventory turnover?

Inventory turnover measures how quickly a business sells and replaces its stock.

It helps indicate whether inventory is moving efficiently or tying up cash unnecessarily.

Why inventory turnover matters

Inventory turnover helps businesses:

• improve stock efficiency
• reduce overstocking
• avoid slow-moving inventory
• improve cash flow

When to use this calculator

Use this calculator when you want to:

• review stock performance
• compare inventory efficiency over time
• evaluate product movement
• improve purchasing decisions

Common mistakes

Common mistakes include:

• using revenue instead of cost of goods sold
• using inconsistent time periods
• underestimating average inventory
• comparing businesses with different stock models

Inventory turnover vs gross margin

These are different but complementary metrics.

• Inventory turnover measures stock movement
• Gross margin measures profitability after direct costs

Related calculations

You may also want to use:

• Cost Per Unit Calculator
• Revenue Calculator
• Gross Margin Calculator

FAQs

What is inventory turnover?

Inventory turnover measures how many times stock is sold and replaced over a period.

How do you calculate inventory turnover?

Inventory Turnover = Cost of Goods Sold ÷ Average Inventory.

Why is inventory turnover important?

It helps businesses understand stock efficiency and cash flow performance.

Is a higher inventory turnover always better?

Not always. Very high turnover can also indicate understocking.