Formula and method
Turnover = COGS ÷ average inventory. Average inventory = (beginning + ending) ÷ 2. Inventory days = entered period days ÷ turnover.
Worked example
$500,000 COGS and $80,000/$120,000 beginning/ending inventory produce $100,000 average inventory, 5.0× turnover, and 73 days for a 365-day period.
Assumptions and limitations
The calculator does not judge the ratio, supply an industry benchmark, provide accounting advice, or forecast inventory needs.
Privacy
Entered values remain in this browser tab. The calculator has no account, value-bearing URL state, remote calculation request, or persistent storage.