What does inventory turnover tell me?

It describes how many times your average inventory value was converted into cost of goods sold during the selected period. Higher turnover means the same inventory value cycled through sales activity more often; lower turnover means stock sat longer between sell-through cycles.

Why do COGS, inventory, and days need to use the same period?

The formula is only meaningful when all three inputs describe the same span of time. Mixing a monthly COGS total with a quarterly inventory average or a 365-day period length turns the ratio into a timing mismatch instead of an operational comparison.

Is there a universally good turnover rate?

No. A useful turnover rate depends on what you sell, how often you replenish, and how much buffer you choose to carry. Treat this calculator as a descriptive comparison tool for your own quarters, locations, or product lines rather than a universal benchmark.

Inventory Turnover Calculator

Turn bookkeeping totals into two fast inventory-efficiency reads: how many times average inventory turned over during the period, and how many days of stock that implies on hand.