Calculator Inputs and Outputs
Inputs
- Average inventory — example: 180000
- Cost of goods sold — example: 1200000
- Period days (days) — example: 365
Results
- Days inventory outstanding (days)
- Inventory turnover for period
- Average COGS per day
Formula used
DIO = average inventory ÷ cost of goods sold × days in period.
How to Use the Days Inventory Outstanding Calculator
Enter the requested values, check the units and assumptions, then select Calculate Days Inventory Outstanding. The built-in defaults provide a complete working example.
Formula
DIO = average inventory ÷ cost of goods sold × days in period.
Understanding the Results
The primary answer appears first. Supporting outputs show related quantities, conversions, dates, costs, ratios, or intermediate values. Calculations keep additional precision before display rounding.
Accuracy Tips
- Use measured values and consistent units.
- Review assumptions, rates, timing, and efficiency inputs.
- Recalculate after changing any condition.
Important Note
This tool provides an informational estimate. Confirm critical financial, medical, construction, scientific, tax, legal, or safety decisions with an appropriately qualified professional.
Calculation Standards
This tool uses documented formulas and high-precision internal values. Displayed results may be rounded for readability. Review the assumptions and verify important decisions with a qualified professional.
Read our calculation methodology