doomath Calculator
Inventory Days Calculator
Calculate days inventory outstanding from average inventory and annual cost of goods sold.
InputsChange a value to recalculate instantly
ResultUpdates as you type
How it worksTransparent math
Calculation details are shown above.
Result breakdownSee the important numbers together
1Days inventory outstanding60.83 days
λ DooMathWork with this calculation
Local · deterministic · optionalQuick mathNatural-language-style shortcuts for deterministic arithmetic.
Calculator guide
How to use the Inventory Days Calculator
Calculate days inventory outstanding from average inventory and annual cost of goods sold.
01Set inputsChoose values, units and assumptions.
02Apply the modelInventory days = Average inventory ÷ COGS × 365.
03Read the resultCheck the output against the assumptions before using it.
What this calculator does
Compare average inventory with the annual cost of goods sold to estimate how many days of COGS are held in inventory.
Formula & method
Inventory days = Average inventory ÷ COGS × 365.
Assumptions & notes
- Average inventory is preferable to a single ending balance.