Days of supply converts turns into a days-per-year ratio.

highlighted = computed this step

Days formula

Days of supply are days per year divided by turns.

days of supply=days per year/turns\text{days of supply}=\text{days per year}/\text{turns}
Inventory ratiosThe table exposes average inventory, turns, and days of supply.inventory ratiosvalueaverage inventory50turns4days of supply90

Days of supply

Days of supply are 90.

360/4=90360 / 4 = 90
Inventory ratiosThe table exposes average inventory, turns, and days of supply.inventory ratiosvalueaverage inventory50turns4days of supply90