Accounting Inventory Turnover Calculator Examples
Worked annual inventory turnover examples showing average inventory, stock turns, and estimated days inventory outstanding.
These examples use annual cost of goods sold with beginning and ending inventory balances. They illustrate how different inventory levels and COGS amounts affect annual turnover and estimated days inventory held.
Steady retailer with four annual turns
A general merchandise retailer reviews annual stock movement using year-end accounts.
Input Summary
Annual cost of goods sold
$500,000
Beginning inventory
$100,000
Ending inventory
$150,000
Calculation Breakdown
- 1Average inventory($100,000 + $150,000) / 2$125,000
- 2Annual turnover$500,000 / $125,0004.00 times
- 3Days inventory outstanding365 / 4.0091.25 days
Result Summary
Days inventory outstanding
91.25 days
Accounting Inventory Turnover Calculator
The business turned average inventory 4.00 times and held inventory for about 91.3 days on average.
Fast-moving small stock range
A specialty seller with a focused product range measures annual stock efficiency.
Input Summary
Annual cost of goods sold
$720,000
Beginning inventory
$50,000
Ending inventory
$70,000
Calculation Breakdown
- 1Average inventory($50,000 + $70,000) / 2$60,000
- 2Annual turnover$720,000 / $60,00012.00 times
- 3Days inventory outstanding365 / 12.0030.42 days
Result Summary
Days inventory outstanding
30.42 days
Accounting Inventory Turnover Calculator
Annual inventory turnover is 12.00 times and days inventory outstanding is about 30.4 days.
Seasonal business with rising year-end stock
A seasonal business builds stock before a busy period and reviews its annual accounts.
Input Summary
Annual cost of goods sold
$360,000
Beginning inventory
$40,000
Ending inventory
$140,000
Calculation Breakdown
- 1Average inventory($40,000 + $140,000) / 2$90,000
- 2Annual turnover$360,000 / $90,0004.00 times
- 3Days inventory outstanding365 / 4.0091.25 days
Result Summary
Days inventory outstanding
91.25 days
Accounting Inventory Turnover Calculator
The calculation gives 4.00 annual turns and 91.3 days inventory outstanding.
Slow-moving inventory position
A distributor evaluates a year in which stock moved more slowly than expected.
Input Summary
Annual cost of goods sold
$180,000
Beginning inventory
$200,000
Ending inventory
$250,000
Calculation Breakdown
- 1Average inventory($200,000 + $250,000) / 2$225,000
- 2Annual turnover$180,000 / $225,0000.80 times
- 3Days inventory outstanding365 / 0.80456.25 days
Result Summary
Days inventory outstanding
456.25 days
Accounting Inventory Turnover Calculator
Inventory turnover is 0.80 times, and estimated days inventory outstanding is 456.3 days.
How to Read Your Results
Inventory turnover is expressed as times per year; it shows the relationship between annual COGS and average inventory.
Days inventory outstanding is the inverse view of turnover: fewer days correspond to more frequent turnover.
Compare results across periods only when COGS, inventory valuation, and time periods are consistent.
Use inventory movement reports and product-level data to investigate changes in the overall ratio.
Assumptions & Important Notes
- Each example uses a 365-day year.
- Inventory is measured at cost, not selling price.
- The beginning and ending balances are used as the available estimate of average inventory.
- All figures are assumed to cover one full accounting year.
Related Examples
Frequently Asked Questions
What does 4 times inventory turnover mean?
It means annual COGS was four times average inventory. In the example, this is equivalent to an estimated 91.3 days of inventory on hand.
Why can a seasonal business need a different average inventory method?
Beginning and ending balances can miss major stock peaks or troughs during the year. Using monthly or weekly balances may better reflect typical inventory.
Is 12 times annual turnover always preferable to 4 times?
Not necessarily. Faster turnover may reduce stock held, but the appropriate level depends on product availability, ordering patterns, and the business model.
Can days inventory outstanding exceed 365 days?
Yes. It can exceed 365 when annual inventory turnover is below one time, meaning average inventory is greater than annual COGS.
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