Days Inventory Outstanding Calculator
Estimate how many days of cost of goods are held in inventory.
Example result
Use the actual reporting period and a representative inventory average. This is an accounting estimate, not an expiry forecast.
How to calculate it
Use the actual reporting period and a representative inventory average. This is an accounting estimate, not an expiry forecast.
Worked example
This is an illustrative scenario, not a market benchmark. Select “Reset to example” to reproduce it in the calculator.
- Average inventory at cost
- 30,000 currency units
- Cost of goods sold
- 240,000 currency units
- Days in reporting period
- 365 days
Days inventory outstanding: 45.63 days
Days Inventory Outstanding FAQ
Should I always enter 365 days?
Use 365 for an ordinary annual period, or the actual days for your quarter or month. COGS must cover that same period.
What does this calculation leave out?
Use the actual reporting period and a representative inventory average. This is an accounting estimate, not an expiry forecast.
Are my inputs saved or sent to a server?
Calculations run in your browser. We do not send your inputs or results to our server or analytics. A comparison stays in this tab until it is refreshed. A CSV is saved only when you choose to download it. See our privacy policy for ordinary hosting and optional analytics data.
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