Inventory Days of Supply Calculator
How many days will my current stock last at the current sales rate?
Your numbers
Result
Days of supply remaining
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How this is calculated
Days of supply tells you if you are overstocked or about to run out. Combined with reorder point, it gives you a clear signal for when to place the next purchase.
- Days of supply = current stock / daily sales
- Reorder when days of supply <= lead time
What to make of the number
A safe gap of 7-14 days above lead time is recommended to buffer supply chain disruptions.
Frequently asked questions
Should I order more if I have surplus days?
Yes, if the excess pushes you toward carrying cost territory. Review with reorder-point-calculator.