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How-to guide

How to Calculate Inventory Turnover: Formula, Steps & Examples

Learn how to calculate Inventory Turnover — the formula explained step by step, with worked examples and a free calculator to check your answer.

By Priya Nair, MBA, Finance & Strategy · Updated Jun 2026 · 2 min read

Calculating your inventory turnover (times/year) is straightforward once you know the Inventory Turnover formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Inventory Turnover Calculator.

What is Inventory Turnover?

The Inventory Turnover calculation tells you your inventory turnover (times/year) from a few simple inputs. The figure you are solving for here is the inventory turnover (times/year).

The Inventory Turnover formula

The core formula is:

Inventory turnover (times/year) = Cost of goods sold (year) ÷ Average inventory

Here is what each input means:

  • Cost of goods sold (year) — a money amount. Example: ₹60,00,000.
  • Average inventory — a money amount. Example: ₹10,00,000.

How to calculate it step by step

  • Write down the cost of goods sold (year) (for example, ₹60,00,000).
  • Write down the average inventory (for example, ₹10,00,000).
  • Apply the formula above to get your inventory turnover (times/year).
  • Double-check the result with the Inventory Turnover Calculator.

Worked examples

Example 1

Input / OutputValue
Cost of goods sold (year)₹60,00,000
Average inventory₹10,00,000
Inventory turnover (times/year)6.00
Days inventory outstanding60.8

With cost of goods sold (year) of ₹60,00,000 and average inventory of ₹10,00,000, the inventory turnover (times/year) works out to 6.00.

Example 2

With cost of goods sold (year) of ₹1,20,00,000 and average inventory of ₹10,00,000, the inventory turnover (times/year) works out to 12.00.

ResultValue
Inventory turnover (times/year)12.00
Days inventory outstanding30.4

Example 3

With cost of goods sold (year) of ₹30,00,000 and average inventory of ₹10,00,000, the inventory turnover (times/year) works out to 3.00.

ResultValue
Inventory turnover (times/year)3.00
Days inventory outstanding121.7

Tips for an accurate result

  • Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
  • Round only at the very end. Rounding inputs early can shift the final answer noticeably.
  • Re-run the numbers whenever an input changes, rather than estimating from an old result.

Prefer not to do the maths by hand? — the Inventory Turnover Calculator does it instantly, for free, with the formula and a worked example built in.

Continue exploring business calculators with these tools: Discount Calculator, Price Elasticity of Demand Calculator, Profit Margin Calculator, Gross Profit Calculator, ROI Calculator.

Calculators in this guide

Frequently asked questions

The formula is: Inventory turnover (times/year) = Cost of goods sold (year) ÷ Average inventory. With cost of goods sold (year) of ₹60,00,000 and average inventory of ₹10,00,000, the inventory turnover (times/year) works out to 6.00.

Gather each input, apply the formula step by step keeping your units consistent, and round only at the end. You can verify your answer instantly with the Inventory Turnover Calculator.

It uses the standard formula with exact arithmetic, so the result is correct for the inputs you enter. Bear in mind that real-world outcomes can still differ when underlying assumptions change.

Priya Nair · MBA, Finance & Strategy

Priya Nair is a business analyst and MBA who advises small businesses and startups on pricing, unit economics and growth metrics.