Inventory calculator
Days inventory outstanding calculator
DIO = (average inventory ÷ annual COGS) × days in year. Use matching annual figures.
Inputs
Enter valid numbers. Calculations run entirely in your browser.
Results
Days inventory outstanding
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Example
Inventory 120,000 with COGS 900,000 and 365 days → DIO ≈ 48.7 days.
Explanation
Higher DIO means inventory turns slower; compare within your industry band.
FAQ
Seasonal inventory?
Use rolling averages that reflect your cycle.