Inventory Turnover Calculator

Find how many times you sell through your inventory in a period, and how many days stock sits on the shelf.

$
365 for a year, 90 for a quarter.
$
$
Fractions and decimals both work.
–
Times per Period
Average inventory
Days of inventory
Weeks of supply
Inventory Tied Up per Turn

Periods

Items you add are saved in this browser.

PeriodTurnoverDaysRemove

How to Calculate Inventory Turnover

Inventory turnover shows how many times you sell and replace your stock in a period. Higher turnover means less cash tied up and less risk of stale stock, though too high can mean stockouts.

Turnover = COGS ÷ average inventory   Average inventory = (beginning + ending) ÷ 2
Days of inventory = days in period ÷ turnover

Worked Example

Tips

Compare turnover with others in your industry: grocers turn inventory far faster than furniture stores. Use cost, not retail price, for inventory values so they match COGS.