Before you start
What you need
Annual COGS, opening inventory, closing inventory, and currency.
Finance & Business Finance
Stock Turnover Calculator
Measure how often average inventory value is consumed through annual cost of goods sold.
- 01Private browser calculation
- 02Assumptions stay visible
- 03CSV and print ready
Transparent method
How this calculation works
Opening and closing inventory are averaged. Annual COGS divided by that average gives turnover; 365 divided by turnover estimates days inventory.
Useful output
What you receive
Turnover multiple, average inventory, approximate days inventory, assumptions, and CSV.
Decision guardrail
What this does not decide
A two-point average can miss seasonal peaks and says nothing about service levels, stockouts, or obsolete items.
Practical uses
Where this tool helps
- Review working-capital efficiency.
- Compare turnover between years.
- Estimate broad inventory days.
Data boundary
Financial inputs remain local
Calculations and report generation run in your browser. Nirmion does not upload, retain, or recover the values entered here. The public catalogue request contains only the tool slug.