Turnover ratio
6.67×
per annual period
Startup Money Math
Inventory Turnover Calculator
Calculate how quickly your business sells and replaces stock. See turnover ratio, days sales of inventory, and industry benchmarks.
Results
Healthy Turnover
Inventory is cycling at a solid pace. Monitor DSI trends to stay ahead of demand shifts.
Days sales of inventory
54.7 days
to sell through stock
Annualized turnover
6.67×
per year
Avg inventory used
$75,000
Industry Benchmark Comparison
Your annualized turnover vs typical industry ranges.
Your Business
6.67×
Grocery (mid)
14–20×
Retail (mid)
8–12×
E-Commerce (mid)
6–10×
Manufacturing (mid)
4–8×
Wholesale (mid)
5–9×
Automotive (mid)
3–6×
Industry benchmarks
| Industry | Typical range | Your position |
|---|---|---|
| Grocery | 14–20× | ↓ Below |
| Retail | 8–12× | ↓ Below |
| E-Commerce | 6–10× | ✓ In range |
| Manufacturing | 4–8× | ✓ In range |
| Wholesale | 5–9× | ✓ In range |
| Automotive | 3–6× | ↑ Above |
How to use it
- Enter COGS and either beginning plus ending inventory or average inventory directly, then choose annual, quarterly, or monthly period. Use cost values rather than revenue so the turnover ratio is not inflated by markup.
- Read turnover ratio, DSI, annualized turnover, rating, and the built-in industry benchmarks. As a rough benchmark, grocery often runs 14-20 turns, retail 8-12, e-commerce 6-10, and manufacturing 4-8.
- Interpret the rating with context: annualized turnover below 4 often means excess stock and tied-up cash, while levels above 20 can signal stockout risk and supplier strain. A rising DSI trend usually means demand is slowing or purchasing discipline is weakening.
- Use the result to decide whether to cut purchase orders, clear old stock, rebalance SKUs, or add safety stock. If turnover looks high overall but certain categories still age badly, manage by SKU group instead of celebrating a blended average.
- Re-run monthly and around seasonal inventory builds. Track DSI and annualized turnover by category over time because the early warning is usually a trend change, not a single bad month.
AI Integrations
Contract, discovery endpoints, and developer notes for agent use.
Always available for agents
AI Integrations
Contract, discovery endpoints, and developer notes for agent use.
Tool contract JSON
https://aibizhub.io/contracts/inventory-turnover-calculator.jsonStable input and output contract for this exact tool.
Human review
People can use the browser page to sense-check outputs and charts, but agents should still execute against the contract and discovery endpoints.
- /agent-tools.json - machine-readable tool index.
- /llms.txt - human-readable model discovery guide.
- /.well-known/webmcp.json - WebMCP capabilities manifest.
- /.well-known/ai-plugin.json - plugin-style discovery manifest.
{
"tool": "inventory_turnover",
"cost_of_goods_sold": 500000,
"beginning_inventory": 80000,
"ending_inventory": 70000,
"period": "annual"
} Expand developer notes
Agent playbook
- Resolve Inventory Turnover Calculator from /agent-tools.json and open its contract before execution.
- Validate inputs against the contract schema instead of scraping labels from the page UI.
- Open the browser page only when a person wants to review charts, assumptions, or related tools.
Agent FAQ
Should ChatGPT, Claude, or another agent click through the UI?
No. Start with /agent-tools.json, then follow the tool's contract URL. The page UI is for human review, not parameter discovery.
When do tools show Quick and Advanced?
Every tool opens in Quick Start first. Advanced Controls keeps the same scenario, reveals more assumptions or diagnostics, and every tool keeps AI integrations inline below the instructions.
When should an agent still open the browser page?
Open it when a human wants to sense-check the output, review the chart, or keep exploring related tools after the calculation finishes.
Questions people usually ask
What is a good inventory turnover ratio?
It varies by industry. Grocery stores typically see 14-20 turns per year, retail 8-12, and manufacturing 4-8. Higher turnover means faster sales but can risk stockouts.
What is days sales of inventory (DSI)?
DSI tells you how many days it takes on average to sell your entire inventory. Lower DSI means faster sales. Calculate it as 365 divided by your turnover ratio.
Should I use COGS or revenue for turnover?
Use COGS (cost of goods sold) for accuracy. Revenue includes markup, which inflates the ratio and makes comparisons unreliable.
Can inventory turnover be too high?
Yes. Very high turnover can indicate understocking, leading to stockouts and lost sales. Balance efficiency with adequate supply.
Is this tool free and private to use?
Yes. AI Biz Hub tools are free, no-signup browser tools. Inputs stay in your browser unless you choose to share a URL.
Related Resources
Learn the decision before you act
Every link here is tied directly to Inventory Turnover Calculator. Use the explanation, formula, examples, and benchmarks to pressure-test the calculator output from first principles.
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