Inventory Turnover Days Calculator
How many days inventory sits before it sells.
Enter your values
ⓘ Live results
Results
- Inventory turnover
- 7.5x per year
- Days of inventory
- 48.7 days
- Average inventory value
- $80000
- Monthly turns
- 0.63
Quick answer
Days of inventory is 365 divided by the inventory turnover ratio, showing how long stock sits before selling.
turnover = COGS / average inventory; days = 365 / turnover
How to use the Inventory Turnover Days Calculator
- 1Enter annual cost of goods sold.
- 2Enter average inventory value for the period.
- 3Higher turnover with lower days means cash is not tied up in stock as long.
Worked example
Using the values the calculator loads with:
Inputs
- Annual COGS600000 $
- Average inventory value80000 $
Results
- Inventory turnover7.5x per year
- Days of inventory48.7 days
- Average inventory value$80000
- Monthly turns0.63
Frequently asked questions
What is a good turnover ratio?
It varies widely by industry — grocery may turn 15x+ a year while furniture might turn 2-4x.
How do I lower days of inventory?
Buy more frequently in smaller batches, or improve demand forecasting.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.