Microeconomics

Inventory Turnover Calculator

Divide cost of goods sold by average inventory to see how many times a business sells and replaces its stock over a period.

  • Free
  • No sign-up
  • Updated for 2026

COGS & inventory

$
$

Enter COGS and average inventory to see turnover.

Worked example

With these example inputs:

  • Cost of goods sold$600,000
  • Average inventory$120,000

Inventory turnover: 5

  • Cost of goods sold$600,000
  • Average inventory$120,000

Add this calculator to your site

Free to embed. Copy the snippet below, it drops the live calculator straight into any page.

What this inventory turnover calculator does

This calculator finds your inventory turnover. You enter your cost of goods and stock. The tool then shows the turnover. It reveals how often you sell your stock. This is a key efficiency measure. Feel free to try a few scenarios. The result helps you manage inventory.

What inventory turnover is

Inventory turnover shows how fast stock sells. It counts how often you clear your inventory. This is over a set period. A higher turnover means faster sales. A lower one means stock sits longer. It is a key sign of efficiency. It reflects how well you manage stock.

How it is calculated

The math behind it is straightforward. You take your cost of goods sold. Then you divide by average inventory. The result is the turnover. It shows the times stock turns over. The calculator takes care of it for you. It saves you the manual sums.

Why inventory turnover matters

Turnover shows how well stock moves. Stock that sits ties up your cash. Fast turnover frees that money up. It also lowers the risk of waste. Slow stock can age or spoil. It is a key retail measure. Watch it alongside your sales.

A high versus low turnover

A high turnover means stock sells fast. It frees up cash and space. But too high can mean lost sales. You may run out of stock. A low turnover ties up money. It can signal weak demand. Aim for a healthy balance.

Turnover and your cash

Turnover is tied to your cash flow. Stock on the shelf is locked-up cash. Selling it faster frees that money. You can then reinvest it sooner. Slow stock drains your working capital. Good turnover keeps cash moving. It supports a healthy business.

Days to sell inventory

You can turn turnover into days. Divide the days in a year by it. This shows the average days to sell. A lower number means faster sales. It is easy to picture in days. It helps you spot slow stock. The calculator can show this too.

How to use it

Enter your cost of goods sold. Add your average inventory. Read the turnover at once. See the days to sell if shown. Then test a few other numbers. Compare a couple of periods. Use it to manage your stock.

Improving your turnover

You can lift turnover in many ways. Order stock more wisely. Clear slow-moving items with a sale. Avoid over-ordering goods. Match your stock to real demand. Improve your sales of key lines. Small steps can speed it up.

Common mistakes to avoid

A common mistake is chasing a high turnover alone. Too high can mean stockouts. Another is ignoring the industry norm. A good figure varies by sector. Some forget seasonal swings. Others compare very different businesses. A solid estimate keeps these mistakes away.

A final tip

Track your inventory turnover over time. Compare it within your own industry. Aim for a healthy balance, not extremes. Watch the days to sell too. Clear slow stock to free up cash. Match your orders to demand. Steady turnover keeps your cash moving.

Frequently asked questions

What does inventory turnover tell me?

It shows how quickly stock is sold. A higher figure usually means efficient inventory management, while a low one can hint at overstocking or weak sales.

How do I find average inventory?

Add the opening and closing inventory for the period and divide by two. Using an average smooths out seasonal swings in stock levels.