Inventory Turnover Calculator – Days in Stock
Inventory turnover shows how often stock is sold and replaced. Days in inventory is 365 divided by that ratio. Use the same period for COGS and average inventory.
How to use this calculator
Inventory turnover shows how often stock is sold and replaced. Days in inventory is 365 divided by that ratio. Use the same period for COGS and average inventory. Results stay in your browser. They are estimates, not financial, tax or medical advice.
Frequently asked questions
How is inventory turnover calculated?
Turnover = cost of goods sold / average inventory. Days = 365 / turnover.
What if turnover is zero?
Days in inventory cannot be calculated if nothing was sold against that average stock.