Inventory · United States
Inventory Days of Cover Calculator
Enter units on hand, average daily sales, supplier lead time, and safety-stock days. See days of cover, reorder pressure, and a recommended reorder date.
Inputs
Result
- Days of cover
- 23.3 days
- Reorder pressure (days remaining before reorder)
- -7.7 days
- Estimated stock-out date
- Fri Oct 02 2026
- Reorder-by date (approx.)
- Tue Sep 01 2026
- Revenue runway from current stock
- $14,280.00
Reorder pressure is negative — you are already inside the reorder window.
Use a 28-day rolling average for daily sales to smooth weekend spikes.
Method
Days of cover = On-hand ÷ Avg daily sales. Reorder pressure = Days of cover − (Lead time + Safety stock).
Frequently asked questions
Is days of cover the same as inventory turnover?
Related but not identical. Turnover is annual, days of cover is a real-time snapshot.
Which sales window should I use?
For fast movers, a 14–28 day rolling average is more accurate than a 90-day average.
Method and guidance reviewed by the AIFlowBiz Editorial Team.
Related reading
Educational tool. Not financial, tax, or legal advice. Confirm current marketplace fees and tax rates from official sources.