Inventory Days Calculator
Professional Methodology
Inventory Days = Average Inventory Value ÷ Annual Consumption Value × 365. Interpret the result together with service level, lead time, criticality and demand variability.
Professional Control Notes
- Use consistent units and clearly defined time periods.
- Record the source and date of every input.
- Validate assumptions before using the result for inventory or purchasing decisions.
- Review results against service level, criticality, lead time and operational constraints.