financial
Days Inventory Outstanding
Average number of days inventory is held before sale.
Definition
Average number of days inventory is held before sale.
Why it matters
DIO translates inventory performance into the language of cash and working capital.
Formula
(Average Inventory / COGS) x 365
Example
Average inventory of $3M against $12M COGS gives about 91 days.
How to interpret it
Read alongside payables and receivables days to understand the full cash cycle.
How to improve it
Reduce excess and obsolete stock, shorten replenishment cycles, improve supplier flexibility.
Common mistakes
Comparing DIO across businesses with different sourcing footprints.
Related KPIs
Related SupplyChain.tools
Run the numbers on SupplyChain.tools - this page covers the management decision.
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