Inventory Turnover Calculator
Use this free Inventory Turnover Calculator to quickly get accurate results in seconds, free and instantly offline with no signup required ever, trusted by professionals in Austin, Chicago, Miami, Denver, Seattle, and New York for reliable daily use without accounts, subscriptions, limits, or delays on any device for everyday personal and business workflows daily.
Measure how fast stock sells using COGS and average inventory with this free inventory turnover calculator, including days on hand.
Calculator Inputs
About Inventory Turnover
Use this free Inventory Turnover Calculator to quickly get accurate results in seconds, free and instantly offline with no signup required ever, trusted by professionals in Austin, Chicago, Miami, Denver, Seattle, and New York for reliable daily use without accounts, subscriptions, limits, or delays on any device for everyday personal and business workflows daily.
What inventory turnover measures: Inventory turnover shows how many times you sold and replaced your entire inventory during a period. A turnover of 5 means you cycled through your stock five times — roughly every 73 days. Higher turnover generally means stronger sales and less capital tied up in stock.
The formula: Turnover = COGS / Average Inventory. If your cost of goods sold is $500,000 and average inventory is $100,000, turnover is 5x. Days on hand = 365 / turnover = 73 days. This tells you how long, on average, an item sits before selling.
Benchmarks by industry: Grocery stores in Chicago and Miami run 12–15x (turning stock every 24–30 days). Clothing retailers in Austin and New York run 4–6x (every 60–90 days). Hardware and parts distributors in Denver and Seattle run 3–5x (every 73–120 days). Compare within your industry, not across categories.
Why low turnover is a problem: Every dollar sitting on a shelf is a dollar not earning interest. If you hold $200,000 in slow-moving inventory at a 10% cost of capital, that stock costs you $20,000 per year. Run this calculator monthly and identify items turning below your industry average.
How to improve turnover: Run promotions on slow movers, reduce reorder quantities, drop underperforming SKUs, and improve demand forecasting. A 1x improvement in turnover on $500K COGS frees up approximately $100,000 in working capital for growth.
Where it is used
A boutique in Austin checking seasonal stock turnover; a grocery chain in Chicago measuring perishable goods velocity; a hardware store in Miami tracking slow-moving items; a parts distributor in Denver optimizing reorder points; a bookstore in Seattle analyzing quarterly rotation; a fashion retailer in New York benchmarking against industry averages.
How to use the Inventory Turnover
- COGS — enter the value (e.g. 500000).
- Average Inventory — enter the value (e.g. 100000).
- Calculate — press the Calculate button to see the result instantly above.
Formula
Turnover = COGS / Avg Inventory; Days = 365 / Turnover
Examples
Grocery Store
Clothing Boutique
Parts Distributor
Frequently Asked Questions
- What is a good inventory turnover ratio?
- It depends on your industry. Grocery stores aim for 12–15x, clothing retailers 4–6x, and hardware stores 3–5x. Compare against your industry average, not an absolute number.
- Should I use COGS or revenue for turnover?
- Use COGS, not revenue. Revenue includes your markup, which inflates the ratio. COGS reflects the actual cost of the inventory, giving you an accurate picture of how fast stock moves.
- How do I calculate average inventory?
- Add your beginning and ending inventory values and divide by two. For more accuracy, add inventory at the start of each month and divide by 12. Monthly averages smooth out seasonal spikes.
- Is high turnover always good?
- Not always — extremely high turnover can mean stockouts, lost sales, and poor customer experience. If you are turning inventory 20x but running out of popular items, you are losing revenue. Balance turnover with availability.
- What if COGS is zero?
- If COGS is zero, turnover is zero — you have no cost of goods sold. This happens in service businesses that do not hold physical inventory. Use a different metric like revenue per employee instead.
- How does this relate to working capital?
- Higher turnover means less cash is tied up in inventory, freeing working capital for other uses. If you improve turnover from 4x to 6x on $300K COGS, you free up approximately $25,000 in cash.