Inventory Turnover Ratio
1250x
Days Inventory Outstanding
0 days
How it works
The Inventory Turnover Ratio Calculator computes how many times a business sells and replaces its inventory over a period — a key metric of operational efficiency, working capital management, and inventory health.
Inventory turnover measures how effectively a business converts inventory into sales. A high turnover means inventory sells quickly (good for cash flow, bad if too high and causing stockouts). A low turnover means slow-moving inventory (tying up working capital, increasing obsolescence risk).
How to use it: enter the Cost of Goods Sold (COGS) and average inventory value (or beginning and ending inventory). The calculator returns: - Inventory Turnover Ratio = COGS / Average Inventory - Days Sales of Inventory (DSI) = 365 / Turnover Ratio (average days to sell inventory) - Industry benchmark comparison
Industry benchmarks: grocery/perishables: 20–30× (very fast), fast fashion: 4–6×, automotive: 3–5×, furniture: 3–4×, electronics: 8–12×, jewelry: 1–2× (slow). The tool includes benchmark ranges for major industries.
Days Sales of Inventory (DSI): "22 DSI" means inventory is held for an average of 22 days before being sold. A grocery store at 12 DSI turns over every 2 weeks — healthy. A furniture store at 90 DSI holds inventory for 3 months — typical for that industry.
Low turnover warning: inventory turnover below the industry benchmark indicates potential issues: overstock, slow-moving SKUs, obsolete inventory, or weak sales. The calculator flags below-benchmark results.
Privacy: financial data runs in the browser.
Frequently Asked Questions
- Use COGS (Cost of Goods Sold), not revenue. COGS and inventory are both measured at cost, making the ratio consistent. Using revenue (which includes margin) inflates the turnover ratio and makes high-margin businesses look better than their actual inventory movement warrants. COGS-based turnover is the industry standard for financial analysis.
- Benchmarks vary significantly: grocery/perishables 20–30×, fast fashion 4–6×, automotive parts 4–7×, consumer electronics 8–12×, furniture 3–4×, medical devices 2–4×, jewelry 1–2×. Compare your turnover to industry peers rather than a universal standard. Below-industry turnover indicates slow-moving stock; above-industry could mean lean inventory risking stockouts.
- The Cash Conversion Cycle (CCC) = Days Inventory Outstanding (DIO) + Days Sales Outstanding (DSO) − Days Payable Outstanding (DPO). DIO = 365 / inventory turnover. A business with 30-day inventory, 45-day customer payment, and 15-day supplier payment has a CCC of 30 + 45 − 15 = 60 days — meaning cash is tied up for 60 days in operations. Lower CCC = better cash efficiency.
- Reduce safety stock for predictable-demand items, improve demand forecasting accuracy to avoid over-ordering, negotiate just-in-time delivery with reliable suppliers, identify and discount slow-moving SKUs before they become obsolete, use ABC analysis to focus management attention on high-value items, and implement automatic reorder points to prevent both stockouts and overstock.