Inventory Turnover Calculator

Summary

Enter your COGS and average inventory to instantly calculate your inventory turnover ratio, days sales of inventory (DSI), and sell-through rate with industry benchmarks.

How it works

1. Select your period (monthly, quarterly, or annual) to set the calculation context.
2. Enter your Cost of Goods Sold (COGS) — the total cost of products sold during the period.
3. Enter your beginning and ending inventory values; the calculator averages them automatically.
4. Optionally enter your beginning inventory units and units sold to compute the sell-through rate.
5. Click Calculate to see the turnover ratio, DSI, sell-through rate, and an industry benchmark comparison.

Use cases

• Identify slow-moving SKUs that are tying up working capital.
• Set reorder points and safety stock levels based on realistic DSI.
• Compare inventory efficiency across product categories or warehouse locations.
• Prepare financial reports or investor decks that include inventory health metrics.
• Benchmark store performance against industry averages before a buying season.
• Negotiate better payment terms with suppliers by demonstrating strong turnover.
• Detect overstock situations early to plan markdowns or promotions.
• Track improvement in inventory management quarter over quarter.

Frequently Asked Questions